-Check valve can prevent the fluid from flowing back and ensure the uniqueness of fluid flows.
-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.

-Specification: DN25 - DN100 (1" to 4")
-Connection: weld, thread, clamp, flange
-Piping standard: DIN, SMS, RJT, IDF, ISO, 3A
-Gasket: EPDM, silicone rubber, FPM (fluorine rubber)
-The maximum pressure of work: 1.0 MPa
-Opening pressure: 0.03 MPa (DN25), 0.02 MPa (DN32/40), 0.01 MPa (DN20/100)
-Working temperature: - 10 ℃ to + 120 ℃ (EPDM)
-The external structure and axis: Stainless steel 304 or 316L
-Spring: Stainless steel
-Contact surface with the material: Ra≤0.8μm
-Matte surface treatment