Pressure Regulating Valve, 2 Way, NPT, Connection Size (In.) 1/2, Port (In.) 1/2 in, Design Pressure (PSIG) 320 psig, Set Points 75 Degrees F to 135 Degrees F, Application Temperature Regulation, For Use With Air Coolers, Fluid Coolers, Heat Exchangers, Oil Coolers, STT15A-602R, SET29A-602R