The YSF‑7B‑I‑4.7 is a North‑American standard compressed gas cylinder valve specially developed for LPG liquefied petroleum gas cylinders. When installing or maintaining this valve, a professional gas cylinder valve wrench is required for threaded tightening, to guarantee reliable connection without thread damage. It should not be confused with engine tuning work including 4 cylinder valve adjustment and 6 cylinder valve adjustment, those operations belong to internal combustion engine maintenance, totally different from gas cylinder accessories. Besides, it also has essential differences from hydraulic cylinder valve, which is designed for hydraulic oil pressure transmission systems.
Made of high‑quality brass alloy, this valve possesses outstanding pressure‑bearing performance and anti‑corrosion capability, suitable for long‑term LPG storage application. Equipped with built‑in over‑pressure safety device, it will automatically release excess gas once internal pressure reaches 2.6‑3.3MPa, effectively avoiding cylinder safety hazards caused by pressure overload. This product adopts standard North‑American thread specifications. The inlet thread 3/4‑14NGT matches mainstream LPG cylinder neck, while dual‑purpose outlet thread 0.885‑14NGO‑LH‑INT and 1.321‑5ACME‑2G‑RH‑EXT supports common filling and connection fittings in North‑American market. With DN6 flow channel, it maintains stable gas flow under rated working pressure of 1.7 MPa.
Every finished valve undergoes strict air‑tightness and pressure resistance inspection before delivery. This model is widely supplied to LPG cylinder manufacturers, gas equipment wholesalers and hardware distributors across North America. Please note this valve is dedicated for LPG medium. It cannot be applied for hydraulic system, automobile engine cylinder modification or other gas media without professional assessment. Proper installation with gas cylinder valve wrench is critical to prevent gas leakage. If you need components for engine 4 cylinder valve adjustment, 6 cylinder valve adjustment or hydraulic cylinder valve, please check our other corresponding product series.
| Type | WP(Mpa) | DN(mm) | Medium | OutletThread | InletThread | Safety Device |
|---|---|---|---|---|---|---|
| YSF‑7B‑I‑4.7 | 1.7 | 6 | LPG | 0.885‑14NGO‑LH‑INT 1.321‑5ACME‑2G‑RH‑EXT | 3/4‑14NGT |
