✔ Name: Plastic One-Way Check Valve (Water Stop Valve)
✔ Size Range: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm
✔ Function: Gas & Liquid Flow Control
These check valves can realize the check function without pressure. If you need a check valve with a certain pressure to open, please indicate in the order. Otherwise, all we send are check valves that can be opened without pressure.
Specifications by Size:
For 3mm, 4mm, 5mm, 6mm, 8mm, 12mm:
● Valve body material: Polypropylene (PP)
● Valve core: Fluorocarbon rubber (FKM)
● Built-in 304 stainless steel spring
● Opening pressure: 2-4 KPa
For 4.5mm:
● Valve body material: Polystyrene (PS)
● Valve core: Elastomer (TPE) - not oil resistant
For 10mm:
● Valve body material: Copolymer
● Valve core: Silicone
● Built-in 304 stainless steel spring
Pressure Type Options (4mm-12mm):
● Valve body material: Polyoxymethylene (POM)
● Valve core: Silicone
● Built-in 304 stainless steel spring
Material Properties:
● Fluororubber models can be used for liquid or gas applications
Service Pressure Range:
● Opening pressure: 0.002 MPa (0.02kg water pressure)
● Reverse pressure: 0.7 MPa (7kg water pressure)
Applications: Laboratory instruments, medical devices, water treatment systems, industrial piping, and fluid control systems.
