Model B2, Back Pressure Regulator; 1/2" Size, Cv=0.30; 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; 2-100 PSIG Range Spring; 0-160 PSIG (0-11.0 BARG) Inlet Gauge; Tamper Proof