Model P3 Rev A Two Stage Cylinder Gas Pressure Reducing Regulator; 1/2" Line Size, Cv=0.08; Stainless Steel Body With Stainless Steel Spring Chamber; Trim Code 1: 302 Stainless Steel Diaphragm With PTFE Gasket, PCTFE Seat, 316L Stainless Steel Seat Retainer And Poppet, Inconel X-750 Poppet Spring; Port Configuration H; NPT End Connections; 2-50 PSIG Range Spring; 0-60 PSIG Outlet Gauge; 0-3000 PSIG Inlet Gauge; Relief Valve: 50-150 PSIG