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Foster PP19-5, 1/2" Industrial Plug x Reusable Hose Fitting, 1/2" ID x 1" OD, 5 Series, Steel

Foster BL4015, 1/2" Industrial Coupler x 1/4" Female NPT, 5 Series, Ball Lock, Brass/Steel

by Foster
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$ 39.69
$ 39.69 - $ 39.69
$ 39.69
$ 31.69
$ 31.69 - $ 31.69
$ 31.69

Reliable, leak-free 1/2" connections for high-flow air and fluid lines. The Foster BL4015 is a Brass/Steel 1/2" industrial coupler from the Foster 5 Series — a high-flow quick coupler that interchanges with any 1/2"-body industrial-interchange half (ISO 6150-B / ANSI T3.20.14; FM 5 Series complies with A-A-59439). Built in the USA for demanding shop air, tools, and production lines.

Specifications

  • Brand: Foster
  • Series: 5
  • Part Number: BL4015
  • Interchange: 1/2" Industrial
  • Body: 1/2" Coupler
  • Thread: 1/4" Female NPT, FPT
  • Valve Type: One-Way Shut-Off
  • Material: Brass/Steel
  • Operation: Manual pull sleeve to connect
  • 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 coupler

  • Manual pull sleeve — which means a positive, deliberate connection; retract the sleeve by hand to connect or release.
  • Brass body with steel sleeve — which means corrosion resistance plus a hardened, long-wearing sleeve.
  • Ball Lock (BL) — which means the sleeve rotates to lock after connection, guarding against accidental disconnect.
  • 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 — full 1/2" flow, 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 1/2"-body industrial-interchange plug (ISO 6150-B / ANSI T3.20.14), the most common high-flow 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 5 Series is an industrial air/fluid coupler for compressed air, water, and similar media; it is not rated for fuel.

Ideal for high-flow shop air lines, pneumatic tools, and production equipment. Pair this coupler with a matching 1/2" 5 Series plug 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.