• Check valve is designed 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 pipe is shock by liquid
• It is used in the food-processing, beverages, winery, oil, cosmetics,pharmaceuticals and chemicals industries.
• The valve is open when pressure of the fluid exceeds the spring pressure and it is closed when the two pressures are close equal.And stronger counter-pressure also makes the valve closed.

Description

• Specifications: DN-25/1″ TO DN-100/4″
• Boby/shaft: AISI 316L/304
• Spring: AISI 304
• Seal: EPDM according to FDA177.2600
• Surface Treatment: Ra ≤0.8 μm
• 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：0.3bar(DN-25)0.2bar(DN-32/40)0.1bar(DN-50/100)
• Working temperature ： -10℃ to 130℃(EPDM)