Mueller Industries AM15502 Pressure Relief Valve 3/8" NPTFE X 3/8" FLR PRV 550 PSI

The Mueller Industries AM15502 Pressure Relief Valve 550 PSI regulates excess refrigerant pressure within sealed cooling circuits by opening once pressure exceeds the set limit, avoiding overload on connected equipment. The design includes 3/8" NPTFE X 3/8" FLR connections, where 3/8" NPTFE is applied to a female threaded pipe interface for secure sealing on rigid lines, and 3/8" FLR represents a flare fitting used for tight tubing attachment with leak-resistant compression seating. It is positioned in pressure-controlled sections of refrigeration and air conditioning assemblies, where it supports balanced pressure discharge during compressor operation cycles and assists consistent system stability across connected components.