Watts 1 1 4 740 030 FS Hot Water Relief Valve, Iron, FNPTF x FNPTF, 1 1 4 in x 1 1 2 in, 30 psi 32305 Shape Straight Type Adapter For Shape Straight Type Adapter For Use With Air Tube Connection Style Push to Connect Push to Connect Type Standard Tube Connection Gender Female O Ring Material Buna N Rubber For Tube OD 3 mm Pipe Connection Style Threaded Pipe Connection Gender Male Thread Type Universal Output Amps 5 Welder Duty Cycle 60 % Series Maxstar 161 STH Power Source Weight 13 lb Input (Amps) 15 Features Auto Line Power Management Technology Spring Material Stainless Steel Body Material Iron Application Hot Water Space Heating Boiler Test Lever Test Lever Included Standards ASME Code HV Seat Material Metal BtuH 2