LB4-AS1K-6BB

Model 2171 Rev B Back Pressure Relief Regulator, PTFE Gasket/O-Ring; 1/2" Line Size, Angle Design (Two Side Inlets - Bottom Outlet); 316L Sales Kit B; Stainless Steel Body And CF3M Stainless Steel Spring Chamber; S1 Trim: 316L Stainless Steel Metal Seat, 302 Stainless Steel Diaphragm; 270-400 PSIG Range Spring (Includes OPT-80: High Inlet Pressure Construction)