YSF‑7B‑I‑4.0 Gas Cylinder Valve

This YSF‑7B‑I‑4.0 is a North‑American standard gas cylinder valve built for LPG liquefied petroleum gas cylinders. It is completely different from head cylinder valve, diving cylinder valve, helium cylinder valve and engine cylinder valve, which are designed for totally different application scenarios. The diving cylinder valve is manufactured for high‑pressure breathing gas tanks, while helium cylinder valve requires special treatment for inert helium gas. The head cylinder valve and engine cylinder valve belong to internal combustion engine components, not gas storage cylinder fittings.

Constructed from premium brass alloy, this valve offers excellent corrosion resistance and stable sealing performance for long‑term LPG service. It comes with integrated pressure‑type safety device, which will release gas automatically when pressure reaches 2.6‑3.3MPa, effectively preventing over‑pressure risk for LPG cylinders. The product adopts North American standard thread specifications. Its inlet thread is 3/4‑14NGT for connecting LPG cylinder neck, and dual‑purpose outlet thread includes 0.885‑14NGO‑LH‑INT and 1.321‑5ACME‑2G‑RH‑EXT, compatible with mainstream North‑American filling and connection accessories. The DN6 flow channel guarantees smooth gas flow under rated working pressure of 1.7 MPa.

Every unit is strictly tested for air tightness and pressure resistance before shipment. This valve is mainly exported for North‑American LPG cylinder manufacturers, hardware distributors and gas equipment suppliers. Users should notice this model is dedicated for LPG medium. It cannot be directly used for helium, diving gas or engine systems without modification. If you need valves for helium cylinder valve, diving cylinder valve or engine‑related engine cylinder valve, please consult us for other matching product models. Reliable craftsmanship and standard thread design make it a popular choice for American‑market LPG cylinder assembly projects.