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 6620-01-290-2973
NSN 5965-01-631-9848
NSN 5855-01-607-6521
NSN 6130-00-032-4859
NSN 5930-00-522-5646
NSN 6150-01-433-2692
NSN 5925-01-543-8310
NSN 5975-00-134-9779
NSN 6650-00-176-1911
NSN 5965-00-521-0511
NSN 5996-01-516-1110
NSN 6685-01-227-2219