Check Valves help you stop unwanted reverse flow with an automatic bubble-tight seal.
The patented diaphragm in the Plast-O-Matic True Blue Check Valve is designed to re-seat with a bubble tight seal regardless of mounting position or reverse flow. Ball style check valves require two properties to seal properly: First, the ball check must be mounted with the flow direction pointed up, because gravity is required to pull the ball to the seat. Secondly, some reverse pressure and flow must be present, because pressure is required to seal the ball exactly on the seat.
If either of these conditions are not met, the ball check will leak! On the other hand, the Plast-O-Matic diaphragm check will seal in any position, whether or not flow is present.
Plastomatic Diaphragm Non-Return Check Valves
Self-closing thermoplastic check valves
The PLAST-O-MATIC "CKM" diaphragm check valves have only five parts, and only one which moves-the diaphragm. This provides both design simplicity and maximum operating dependability.
Series CKS Check Valves are normally-closed in design. They feature a corrosion resistant PFA encapsulated spring which energizes a poppet seal that will neither stick nor chatter and is automatic in action.