Applications
-  Check valve is segined to prevent fluid from flowing back and ensure the flow to one way direction.
-  It can be used to reduce the loss of fluid back suction,avoid ingpipe-hammering.
-  It is used in the food-processing, beverages, winery, oil, cosmetics,
pharmaceutical and chemical industries.
Operating principle:
- The valve opens when pressure of the fluid exceeds the spring pressure.While it is closed when the two pressures are close equal.And stronger counter-pressure also makes the valve close.

Design and features: - Available sizes:DN-25/1"to 100/4" - Easily disassemble. - compact construction. - Boby/shaft :AISI 316L/SS304 - Spring: AISI 301 - Seal: EPDM according to FDA177.2600 - Surface finishing: Ra≤0.8μm

- Seal:NBR, FPM (Viton) or PTFE. FDA 177.2600(optional) Connections: weld, thread, clamp, DIN, SMS, RJT, IDF, ISO,3A
- Max. pressure :10 bar
- Opening pressure: 0.3 bar (DN-25)
0.2 bar (DN-32/40)
0.1 bar (DN-50/100)
- Working temperature -10℃ to +120℃ (EPDM)

Check Valve Curve