Series CK
Thermoplastic Check Valve shall be self-closing, normally closed, self-sealing valve, independent of gravity and reverse flow and installable in any position. The body material shall be PTFE and the diaphragm material shall be [EPDM or Viton or Buna]. Diaphragm shall automatically reposition itself against the seat in the identical position. Check valve shall start cracking open at 1.0-1.5 psi and will be of size [" or 1"] with NPTF threaded connection. All units to be 100% individually tested at the factory. As manufactured by Plast-O-Matic Valves Inc., Cedar Grove, NJ. <