Pressure Regulating Valve, 3 Way, Sweat, Connection Size (In.) 3/4, Port (In.) 3/4 in, Min. Fluid Temp. (F) -4 Degrees F, Design Pressure (PSIG) 630 psig, Set Points 200 to 400, Application Head Pressure Control with Non-Corrosive Refrigerants, For Use With Non Corrosive Refrigerants, STT16A-624R, SEP38A-601R