1/2″ Poppet Valve
685 Series poppet check valves incorporate a thin elastomer disc supported by a poppet that seals on the seat. Pressure in the flow direction moves the seal off the seat at about 12 psi then moves the poppet away from the seat as the pressure builds.
Specifications:
- Hastelloy spring is chemically resistant
- Black glass-filled polypropylene construction
- Cracking pressure: 12 PSI
- Max pressure: 125 PSI
- Max temp: 140 degrees F
- 1/2″ FNPT inlet and outlet
WARNING: This product can expose you to chemicals including Lead, which is known to the State of Californiato cause cancer and birth defects or other reproductive harm (For more information go to www.p65warnings.ca.gov).








