Model B2, Back Pressure Regulator; 1/2" Size, Cv=0.05; 316L Stainless Steel Body, 316L Stainless Steel Spring Chamber; 302 Stainless Steel With Tefzel Ring Diaphragm, TFE Seat, 316L Stainless Steel With PCTFE Seal, Port Configuration D; FNPT End Connection; PNeumatic Dome Loaded Range 0-125 PSIG; 0-30 PSIG (0-2.6 BARG) Inlet Gauge