Plast-O-Matic Valves, Inc. Datasheets for Check Valves

Check valves are self-activating safety valves that permit gases and liquids to flow in only one direction, preventing process flow from reversing. They are classified as one-way directional valves. 
Check Valves: Learn more

Product Name Notes
Self-Closing Thermoplastic Check Valve -- Series CK
Self-Closing Thermoplastic Check Valve -- Series CKM
Series CKM A unique, patented diaphragm provides normally-closed operation with a bubble-tight seal, even with no reverse pressure. 1/2″ through 1″ pipe sizes.
Self Closing Check Valve -- Series CKS Series CKS An encapsulated spring and sliding poppet provides the same normally-closed, bubble-tight performance in larger sizes 1 1/2” through 4″.
Compact Diaphragm Check Valve -- Series CKD A specialty diaphragm check valve that opens with virtually no forward pressure. However, Series CKD requires a minimum back pressure of 1/2 PSI to close. When inlet pressure is sensed...