Applications
- A check valve is a valve that prevents the fluid from flowing back and ensures that if flows in only one direction.
- It can be used to prevent the loss of prime of the pump and to avoid pipe-hammering.
- It is used in the food-processing, beverages, wine-making, oil-making, cosmetics,pharmaceutical and chemical industries.
Operating principle
- The valve opens when the pressure of the fluid exceeds the pressure exerted by the
pump spring.When the two pressures are equalised, the valve closes.A stronger counterpressure allows the valve to close.

Design and features - Available in sizes DN-25/1"to 100/4" - Easy disassembly. - Low-size construction. - Casing/shaft AISI 316L - Spring AISI 301 - Seal EPDM according to FDA177.2600 - Surface finishing Ra≤0.8μm - Seals in 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 -10oC to +120oC (EPDM)