Diaphragm Check Valves

Plast-O-Matic Series CKM and CKS Check Valves, normally closed in design, feature a patented diaphragm seal that will never stick or chatter and is automatic in action. The valves are not dependent upon gravity so they can be mounted in any position. Even in the absence of reverse flow or pressure, the diaphragm will automatically reposition itself to seal against the valve seat. The CKM Series unique and patented diaphragm will seal in the identical location every time producing more reliable and repetitive seal. Plast-O-Matic Series CKS Check Valves, normally closed in design, feature a corrosion resistant PFA encapsulated spring which energizes a poppet seal that will neither stick nor chatter and is automatic in action. Full 150 psi Maximum Internal Pressure at 73°F for PVC and PVDF models and 100 psi for polypropylene units.

Features
• Self-closing - not dependent upon gravity     • Will not leak at low pressures - like ball checks     • Minimal cracking pressure 1 - 1-1/2 psi     • Available with either EPDM or Viton®  Seals     • Available with socket end connectors.