{"title":"Foster 3 Series Couplers","description":"\u003cp\u003eThe Foster 3 Series is the 1\/4\" body industrial interchange, the most popular air coupler size for shop and industrial systems. This collection includes 3 Series couplers and plugs in brass, steel, and stainless with NPT, hose barb, push-on, and reusable terminations, plus automatic, sleeve guard, ball check, and dust cap options. Filter by thread, material, and coupler or plug to match your line.\u003c\/p\u003e","products":[{"product_id":"m-style-plug-1-4-body-x-1-4-male-npt-thread","title":"Foster 10-3B, 3 Series, Industrial Plug, 1\/4\" Male NPT, Brass","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e10-3B\u003c\/strong\u003e is a Brass 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 10-3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e One-Way Shut-Off plug (un-valved; mates with valved socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass construction\u003c\/strong\u003e — which means it withstands repeated high-pressure cycling without deforming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":30167774529,"sku":"10-3B (1)","price":3.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/10-3B_1pcHPC.jpg?v=1522778203"},{"product_id":"m-style-industrial-plug-1-4-body-x-1-4-female-npt-thread-brass","title":"Foster 11-3B, 3 Series, Industrial Plug, 1\/4\" Female NPT, Brass","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e11-3B\u003c\/strong\u003e is a Brass 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 11-3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e One-Way Shut-Off plug (un-valved; mates with valved socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass construction\u003c\/strong\u003e — which means it withstands repeated high-pressure cycling without deforming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":30272797761,"sku":"11-3B (1)","price":3.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/11-3B_1pcHPC.jpg?v=1522947827"},{"product_id":"m-style-industrial-plug-1-4-body-x-1-4-male-npt-thread-steel","title":"Foster 10-3, 3 Series, Industrial Plug, 1\/4\" Male NPT, Steel","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e10-3\u003c\/strong\u003e is a Steel 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 10-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e One-Way Shut-Off plug (un-valved; mates with valved socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel construction\u003c\/strong\u003e — which means it withstands repeated high-pressure cycling without deforming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":30933575809,"sku":"10-3 (1)","price":1.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/10-3_1pcHPC-NEW.jpg?v=1522778800"},{"product_id":"m-style-industrial-coupler-1-4-body-x-1-4-male-npt-thread-brass-steel","title":"Foster 3003, 3 Series, Industrial Coupler, Manual, 1\/4\" Female NPT, Brass, Steel","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e3003\u003c\/strong\u003e is a Brass\/Steel 1\/4\" industrial coupler from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 3003\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\/Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual pull sleeve to connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual pull sleeve\u003c\/strong\u003e — which means a positive, deliberate connection; retract the sleeve by hand to connect or release.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass body with steel sleeve\u003c\/strong\u003e — which means corrosion resistance plus a hardened, long-wearing sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange plug (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this coupler with a matching 1\/4\" 3 Series plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":31612941057,"sku":"3003 (1)","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/3003_1pcHPC.jpg?v=1524171062"},{"product_id":"m-style-industrial-coupler-1-4-body-x-1-4-male-npt-thread-brass-steel-3","title":"Foster 3103, 3 Series, Industrial Coupler, Manual, 1\/4\" Male NPT, Brass, Steel","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e3103\u003c\/strong\u003e is a Brass\/Steel 1\/4\" industrial coupler from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange plug (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. 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The Foster \u003cstrong\u003e3003GS\u003c\/strong\u003e is a Steel 1\/4\" industrial coupler from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 3003GS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Automatic, USA-made slim profile (compact push-to-connect socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic slim profile\u003c\/strong\u003e — which means a compact, USA-made automatic socket that connects with a simple push, ideal where space is tight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange plug (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this push-to-connect?\u003c\/strong\u003e\u003cbr\u003eYes — insert the plug and it connects automatically with no sleeve retraction.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. 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The Foster \u003cstrong\u003e3003GB\u003c\/strong\u003e is a Brass 1\/4\" industrial coupler from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). 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The Foster \u003cstrong\u003e17-3\u003c\/strong\u003e is a Steel 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":7106384363567,"sku":"17-3 (1)","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/17-3_HPC_fc3802c6-bff0-4362-9411-e889263ed3d9.jpg?v=1521658565"},{"product_id":"3-series-industrial-plug-1-4-female-npt-steel","title":"Foster 11-3, 3 Series, Industrial Plug, 1\/4\" Female NPT, Steel","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. 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Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 11-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e One-Way Shut-Off plug (un-valved; mates with valved socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel construction\u003c\/strong\u003e — which means it withstands repeated high-pressure cycling without deforming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. 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Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 12-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/8\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e One-Way Shut-Off plug (un-valved; mates with valved socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel construction\u003c\/strong\u003e — which means it withstands repeated high-pressure cycling without deforming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":7107147956271,"sku":"12-3 (1)","price":2.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/12-3_1pcHPC.jpg?v=1522780553"},{"product_id":"3-series-industrial-plug-1-8-female-npt-steel","title":"Foster 13-3, 3 Series, Industrial Plug, 1\/8\" Female NPT, Steel","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e13-3\u003c\/strong\u003e is a Steel 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":7107158474799,"sku":"13-3 (1)","price":2.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/13-3_1pcHPC.jpg?v=1522356318"},{"product_id":"3-series-industrial-plug-1-8-female-npt-brass","title":"Foster 13-3B, 3 Series, Industrial Plug, 1\/8\" Female NPT, Brass","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e13-3B\u003c\/strong\u003e is a Brass 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":7107172270127,"sku":"13-3B (1)","price":4.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/13-3B_1pcHPC.jpg?v=1524851673"},{"product_id":"3-series-industrial-plug-3-8-male-npt-steel","title":"Foster 14-3, 3 Series, Industrial Plug, 3\/8\" Male NPT, Steel","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e14-3\u003c\/strong\u003e is a Steel 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 14-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 3\/8\" Male NPT, MPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e One-Way Shut-Off plug (un-valved; mates with valved socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel construction\u003c\/strong\u003e — which means it withstands repeated high-pressure cycling without deforming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. 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Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 17-3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 3\/8\" Hose ID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e One-Way Shut-Off plug (un-valved; mates with valved socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass construction\u003c\/strong\u003e — which means it withstands repeated high-pressure cycling without deforming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":7118776696879,"sku":"17-3B (1)","price":5.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/17-3Bhpc.jpg?v=1522253400"},{"product_id":"3-series-industrial-plug-5-16-hose-barb-steel","title":"Foster 165-3, 3 Series, Industrial Plug, 5\/16\" Hose Barb, Steel","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e165-3\u003c\/strong\u003e is a Steel 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":7118912847919,"sku":"165-3 (1)","price":6.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/165-3_1pcHPC.jpg?v=1522087652"},{"product_id":"3-series-industrial-coupler-3-8-female-npt-brass-steel","title":"Foster 3203, 3 Series, Industrial Coupler, Manual, 3\/8\" Female NPT, Brass, Steel","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e3203\u003c\/strong\u003e is a Brass\/Steel 1\/4\" industrial coupler from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 3203\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 3\/8\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\/Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual pull sleeve to connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual pull sleeve\u003c\/strong\u003e — which means a positive, deliberate connection; retract the sleeve by hand to connect or release.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass body with steel sleeve\u003c\/strong\u003e — which means corrosion resistance plus a hardened, long-wearing sleeve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange plug (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange plug (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this push-to-connect?\u003c\/strong\u003e\u003cbr\u003eYes — insert the plug and it connects automatically with no sleeve retraction.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. 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Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 15-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 3\/8\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e One-Way Shut-Off plug (un-valved; mates with valved socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel construction\u003c\/strong\u003e — which means it withstands repeated high-pressure cycling without deforming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. 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The Foster \u003cstrong\u003e16-3\u003c\/strong\u003e is a Steel 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 16-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Hose ID\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e One-Way Shut-Off plug (un-valved; mates with valved socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel construction\u003c\/strong\u003e — which means it withstands repeated high-pressure cycling without deforming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":7132964159535,"sku":"16-3 (1)","price":2.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/16-3_1pcHPC.jpg?v=1522698060"},{"product_id":"3-series-industrial-plug-1-4-hose-barb-barb","title":"Foster 16-3B, 3 Series, Industrial Plug, 1\/4\" Hose Barb, Brass","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e16-3B\u003c\/strong\u003e is a Brass 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":7133013966895,"sku":"16-3B (1)","price":6.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/16-3B_1pcHPC.jpg?v=1522775099"},{"product_id":"3-series-industrial-coupler-manual-1-4-female-npt-brass","title":"Foster 3003HW, 3 Series, Industrial Coupler, Manual, 1\/4\" Female NPT, Brass (HOT WATER)","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e3003HW\u003c\/strong\u003e is a Brass\/SS 1\/4\" industrial coupler from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 3003HW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Coupler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Female NPT, FPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\/SS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual pull sleeve to connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -15°F to +400°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Viton\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this coupler\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual pull sleeve\u003c\/strong\u003e — which means a positive, deliberate connection; retract the sleeve by hand to connect or release.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass construction\u003c\/strong\u003e — which means corrosion resistance and smooth, reliable operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eViton seal, Brass\/SS\u003c\/strong\u003e — which means dependable sealing in hot-water service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange plug (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Viton seal rated -15°F to +400°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange plug (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this push-to-connect?\u003c\/strong\u003e\u003cbr\u003eYes — insert the plug and it connects automatically with no sleeve retraction.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange plug (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this push-to-connect?\u003c\/strong\u003e\u003cbr\u003eYes — insert the plug and it connects automatically with no sleeve retraction.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this coupler with a matching 1\/4\" 3 Series plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":7142497878063,"sku":"FM3203 (1)","price":17.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/FM3203_1pcHPC.jpg?v=1526414882"},{"product_id":"3-series-industrial-coupler-automatic-3-8-male-npt-brass","title":"Foster FM3303, 3 Series, Industrial Coupler, Automatic, 3\/8\" Male NPT, Brass","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003eFM3303\u003c\/strong\u003e is a Brass 1\/4\" industrial coupler from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). 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The Foster \u003cstrong\u003eFM3603\u003c\/strong\u003e is a Brass 1\/4\" industrial coupler from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange plug (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this push-to-connect?\u003c\/strong\u003e\u003cbr\u003eYes — insert the plug and it connects automatically with no sleeve retraction.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this coupler with a matching 1\/4\" 3 Series plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":7142546898991,"sku":"FM3603 (1)","price":18.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/FM3603_1pcHPC.jpg?v=1526935060"},{"product_id":"3-series-industrial-coupler-automatic-3-8-hose-barb-brass","title":"Foster FM3703, 3 Series, Industrial Coupler, Automatic, 3\/8\" Hose Barb, Brass","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange plug (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this push-to-connect?\u003c\/strong\u003e\u003cbr\u003eYes — insert the plug and it connects automatically with no sleeve retraction.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this coupler with a matching 1\/4\" 3 Series plug for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":7142558367791,"sku":"FM3703 (1)","price":18.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/products\/FM3703_1pcHPC.jpg?v=1526332241"},{"product_id":"3-series-industrial-coupler-manual-sleeve-guard-1-4-hose-barb-brass","title":"Foster SG1513, 3 Series, Industrial Coupler, Manual, Sleeve Guard, 1\/4\" Push-On Hose Barb, Brass","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange plug (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is a Sleeve Guard?\u003c\/strong\u003e\u003cbr\u003eA rigid flange at the nose of the socket that protects the sleeve from being knocked open when the hose is dragged.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. 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The Foster \u003cstrong\u003e1513\u003c\/strong\u003e is a Brass\/Steel 1\/4\" industrial coupler from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). 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The Foster \u003cstrong\u003e14-3B\u003c\/strong\u003e is a Brass 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). 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Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":42005800091695,"sku":"FOST 14-3B (1)","price":7.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/FOST14-3BStockPhoto.png?v=1704946569"},{"product_id":"foster-51-3-3-series-industrial-plug-1-4-hose-barb-push-on-steel-1","title":"Foster 51-3, 3 Series, Industrial Plug, 1\/4\" Hose Barb (Push-On), Steel","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e51-3\u003c\/strong\u003e is a Steel 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 51-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 1\/4\" Push-On Hose Stem\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e One-Way Shut-Off plug (un-valved; mates with valved socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel construction\u003c\/strong\u003e — which means it withstands repeated high-pressure cycling without deforming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":42005810020399,"sku":"FOST 51-3 (1)","price":4.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/FOST51-3StockPhoto.png?v=1704948302"},{"product_id":"foster-51-3-3-series-industrial-plug-3-8-hose-barb-push-on-steel","title":"Foster 71-3, 3 Series, Industrial Plug, 3\/8\" Hose Barb (Push-On), Steel","description":"\u003cp\u003eReliable, leak-free 1\/4\" connections for air and fluid lines. The Foster \u003cstrong\u003e71-3\u003c\/strong\u003e is a Steel 1\/4\" industrial plug from the Foster 3 Series — the most popular industrial air-coupler size, interchanging with any 1\/4\"-body industrial-interchange half (ISO 6150-B \/ ANSI T3.20.14; FM 3 Series complies with A-A-59439; FM accept MIL-C-4109F plugs). Built in the USA for shop air, tools, and production lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Foster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 71-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchange:\u003c\/strong\u003e 1\/4\" Industrial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e 1\/4\" Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e 3\/8\" Push-On Hose Stem\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e One-Way Shut-Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e One-Way Shut-Off plug (un-valved; mates with valved socket)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Pressure:\u003c\/strong\u003e 300 PSIG; vacuum to 27\" Hg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -40°F to +250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal:\u003c\/strong\u003e Buna-N (Nitrile)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1pc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy this plug\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel construction\u003c\/strong\u003e — which means it withstands repeated high-pressure cycling without deforming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Way Shut-Off\u003c\/strong\u003e — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSnap it on and the connection just holds — clean airflow, no drips, no hiss. Built to take daily shop abuse and keep sealing leak-free, connection after connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFrequently asked questions\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this connect to?\u003c\/strong\u003e\u003cbr\u003eIt mates with any 1\/4\"-body industrial-interchange coupler (ISO 6150-B \/ ANSI T3.20.14), the most common air-coupler standard in North America.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure and temperature is it rated for?\u003c\/strong\u003e\u003cbr\u003e300 PSIG working pressure (vacuum to 27\" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this air coupler fuel-rated?\u003c\/strong\u003e\u003cbr\u003eNo — the 3 Series is an industrial air\/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.\u003c\/p\u003e\u003cp\u003eIdeal for shop air lines, pneumatic tools, and production equipment. Pair this plug with a matching 1\/4\" 3 Series coupler for a complete, leak-free connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from hpcouplers:\u003c\/strong\u003e Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.\u003c\/p\u003e","brand":"Foster","offers":[{"title":"Default Title","offer_id":42006158802991,"sku":"FOST 71-3 (1)","price":3.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/9849\/files\/FOST51-3StockPhoto_60bfe6b7-2bcb-4ead-8560-45d72a20175c.png?v=1704961759"}],"url":"https:\/\/www.hpcouplers.com\/en-mx\/collections\/foster-3-series-couplers.oembed?page=4","provider":"hpcouplers","version":"1.0","type":"link"}