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

Foster 3103D, 1/4" Industrial Coupler x 1/4" Male NPT, 3 Series, Dill Valve, Brass/Steel

by Foster
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$ 13.99
$ 13.99 - $ 13.99
$ 13.99
$ 11.19
$ 11.19 - $ 11.19
$ 11.19

Reliable, leak-free 1/4" connections for air and fluid lines. The Foster 3103D 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.

Specifications

  • Brand: Foster
  • Series: 3
  • Part Number: 3103D
  • Interchange: 1/4" Industrial
  • Body: 1/4" Coupler
  • Thread: 1/4" Male NPT, MPT
  • Valve Type: Dill Valve
  • Material: Brass/Steel
  • Operation: Dill valve coupler (pairs with Dill valve plug)
  • 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.
  • Dill Valve — this coupler uses a Dill valve and is designed to pair with the 3 Series Dill valve plugs (10-3D, 10-3DB) for valve-core service.
  • Brass body with steel sleeve — which means corrosion resistance plus a hardened, long-wearing sleeve.

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 plug (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.

What pairs with this Dill valve coupler?
The 3 Series Dill valve plugs (10-3D steel, 10-3DB brass). The Dill valve setup is used for valve-core service.

Ideal 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.

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.