High Sealing Brass Spring Loaded Check Valve BSP Female Thread PN16 Water Supply Non-return Valve
Made of EU CW617N brass, excellent rust & corrosion resistance, adapt cold/hot water, low-pressure heating medium from -20℃~120℃.
Spring-driven clapper opens by forward water pressure, instantly closes when backflow occurs, automatically protect pump & equipment from reflux damage.
Both ends BSP female thread, convenient to connect male thread pipe fittings directly without extra adapter, simplify pipeline construction.
Vertical installation only, spring auxiliary quick closing reduces pipeline water hammer, effectively relieve hydraulic impact on piping accessories.
Composite PTFE&EPDM sealing inside, tight sealing under low water pressure, zero leakage within PN16 rated working pressure.
Cylindrical compact body, save installation space, ideal for narrow space of water heater inlet, circulating pump outlet, manifold branch pipe.






Qingdao Yida Tongtu Machinery Technology Co., Ltd., in the beautiful coastal city of Qingdao. Specializing in high-growth ventures such as valves and power equipment, the company is dedicated to providing comprehensive solutions for industries including petroleum, chemicals, and water utilities, empowering clients to grow and achieve success.
We are a cutting-edge trading enterprise specializing in one-stop industrial valve matching, deeply cultivating gate valves, globe valves, ball valves, check valves, butterfly valves, etc. Our main products include American standard API, German standard DIN, and Japanese standard JIS, suitable for various industries such as chemical, petroleum, gas, power, metallurgy, etc.
We selects qualified factories from the source, strictly controls product quality, adheres to the direct supply mode, and relies on the advantages of a streamlined and efficient team to achieve rapid implementation of customer demands. At the same time, we can provide customers with standard spot goods, non-standard customization, OEM, project batch matching, and a complete set of export documentation services, becoming a long-term stable valve procurement partner for customers with professionalism, reliability, and high cost-effectiveness.












Our mission is to offer "High Quality" & "Good Service" & "Fast Delivery" to help our clients to gain more profits.