Mfr's name is "pressure control"
A value designed to automatically maintain within close limits a predetermined pressure within a closed system regardless of the higher fluctuating or constant inlet pressure. The excess pressure is by-passed to the accumulator or reservoir in lieu of passing through the entire system. It is designed primarily for use in refrigeration and air conditioning systems. Excludes valve, regulating, fluid pressure and valve, calibrated flow.
Classification: Regulator valves, self-operating, for controlling variables such as temperature, pressure, flow and liquid level
NSN 5945-01-549-8368
NSN 6150-01-547-1902
NSN 5915-01-182-7487
NSN 5895-00-043-1990
NSN 5999-01-596-9665
NSN 5990-01-588-3999
NSN 6685-01-250-8200
NSN 6220-00-515-0437
NSN 6240-01-149-8156
NSN 5915-01-316-1747
NSN 5985-01-188-8926
NSN 4140-01-392-6165