Refrigerating Specialties CK-1 Check Valves

These piston type, gravity closing, heavy duty check valves are suitable for Ammonia, R-12, R-22, R-502, other refrigerants, certain oils, and other fluids approved for use in refrigeration. All CK1 check valves are flanged and have a manual opening stem for manual operation. They may be ordered with male adapter rings (through 4" size) for close coupling. The 20-32 mm (3/4 - 1-1/4") port size have a PTFE seat, larger valves have a metal to metal seat. A minimum pressure difference of .03 bar (0.5 psi) is required to open the valve.

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