Reliable, leak-free 1/2″ connections for high-flow air and fluid lines. The Foster FM6406H is a Brass 3/4″ industrial coupler from the Foster 6 Series — a high-flow quick coupler that interchanges with any 3/4″-body industrial-interchange half (ISO 6150-B / ANSI T3.20.14). Built in the USA for demanding shop air, tools, and production lines.
Specifications
- Brand: Foster
- Series: 6
- Part Number: FM6406H
- Interchange: 3/4″ Industrial
- Body: 3/4″ Coupler
- Thread: 3/4″ Female NPT, FPT
- Valve Type: One-Way Shut-Off
- Material: Brass
- Operation: Automatic, push-to-connect (insert the plug; no sleeve retraction to connect)
- Working Pressure: 300 PSIG; vacuum to 27″ Hg
- Temperature Range: -15°F to +400°F
- Seal: Viton
- Quantity: 1pc
- Origin: Made in USA
Why this coupler
- Automatic push-to-connect — which means single-handed connection with no sleeve retraction, for faster cycle times.
- Brass construction — which means corrosion resistance and smooth, reliable operation.
- Viton seal — which means reliable sealing in elevated-temperature service.
- 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 3/4″ 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 3/4″-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 Viton seal rated -15°F to +400°F.
Is this push-to-connect?
Yes — insert the plug and it connects automatically with no sleeve retraction.
Ideal for high-flow shop air lines, pneumatic tools, and production equipment. Pair this coupler with a matching 3/4″ 6 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.
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