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Foster 3PDC, 1/4" 3 Series Plug Dust Cap, Plastic

Foster PB3-3S/S, 1/4" Industrial Plug x Reusable Hose Fitting, 1/4" ID x 1/2" OD, 3 Series, 303 Stainless

by Foster
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$ 1,120.00
$ 1,120.00 - $ 1,120.00
$ 1,120.00
$ 897.00
$ 897.00 - $ 897.00
$ 897.00

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster PB3-3S/S is a 303 Stainless 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.

Specifications

  • Brand: Foster
  • Series: 3
  • Part Number: PB3-3S/S
  • Interchange: 1/4" Industrial
  • Body: 1/4" Plug
  • Thread: Reusable Hose Fitting, 1/4" ID x 1/2" OD
  • Valve Type: One-Way Shut-Off
  • Material: 303 Stainless
  • Operation: One-Way Shut-Off plug (un-valved; mates with valved socket)
  • Working Pressure: 300 PSIG; vacuum to 27" Hg
  • Temperature Range: -40°F to +250°F
  • Seal: Buna-N (Nitrile)
  • Quantity: 1pc
  • Origin: Made in USA

Why this plug

  • 303 Stainless construction — which means it withstands repeated high-pressure cycling without deforming.
  • Reusable hose fitting — which means you can re-clamp it onto a fresh hose instead of scrapping it.
  • One-Way Shut-Off — which means the socket seals the supply line the instant the plug is removed, holding pressure and preventing blow-down.

Snap 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.

Frequently asked questions

What does this connect to?
It 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.

What pressure and temperature is it rated for?
300 PSIG working pressure (vacuum to 27" Hg connected), with a Buna-N (Nitrile) seal rated -40°F to +250°F.

Is this air coupler fuel-rated?
No — the 3 Series is an industrial air/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.

What hose does it fit?
It is sized for hose with 1/4" inside diameter and 1/2" outside diameter. The reusable clamp grips the hose OD; no separate crimp needed.

Ideal 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.

Why buy from hpcouplers: Foster quality (an Ideal Tridon Group brand), backed by responsive US-based support, accurate specs, and fast shipping. Quick-coupling is what we do.