Foster A-3603, 1/4" Acetylene Coupler x 1/4" Hose ID, A70 Series (Hansen 700), Brass
Brass quick couplers for acetylene and gas service. The Foster A-3603 is a 1/4" coupler from the A70 Series, which interchanges with Hansen 700 couplers. Designed for compressed air and gases in welding, breathing equipment, shipyard, and construction work. One-way shut-off, rated to 300 PSIG. Acetylene service rated at 15 psig or less.
Specifications
- Brand: Foster
- Series: A70 (Hansen 700 Interchange)
- Part Number: A-3603
- Interchange: Hansen 700
- Gas Service: Acetylene (use at 15 psig or less)
- Body: 1/4" Coupler
- Thread: 1/4" Hose ID
- Type: One-Way Shut-Off
- Operation: Sleeve must be retracted to connect and disconnect (safety)
- Material: Brass
- Max Working Pressure: 300 PSIG
- Quantity: 1pc
- Origin: Made in USA
Why this coupler
- Hansen 700 interchange — which means it couples with the widely used Hansen 700 acetylene coupler system.
- Acetylene service — which means it is intended for acetylene lines (at 15 psig or less) in welding and gas applications.
- Safety sleeve operation — which means the sleeve must be retracted to connect and disconnect, helping prevent accidental release.
- Solid brass construction — which means corrosion resistance and reliable gas-service performance.
Frequently asked questions
What is this used for?
Acetylene and compressed-gas service in welding, breathing equipment, shipyards, and construction. A70 interchanges with Hansen 700.
Is there a pressure limit for the gas?
Yes — A70 is intended for acetylene at 15 psig or less. Max coupler working pressure is 300 PSIG.
What does it interchange with?
Hansen 700 couplers. O60 (oxygen) and A70 (acetylene) use different connections so the two gases cannot be cross-connected.
Built for welding and gas-service lines. Pair this coupler with a matching A70 (Hansen 700) plug.
Why buy from hpcouplers: Foster quality, responsive US-based support, accurate specs, fast shipping.