Application
The check valve is used in stainless steel piping system to prevent liquid backflow .
Working principle
when the pressure of lower stem exceeds the pressure of the valve stem above and the spring ,the valve opens
When the pressure of lower stem and upper stem balanced ,valve is closed .
A higher adverse pressure acting on the valve stem on the valve stem so that the valve shut down .
Material
contact with the products components:304 or 316L
sealing material:EPDM
connecting
welding,clamp,male and female,flange
Welding mouth:DIN11850 IDF/ISO/SMS