Model P4 Rev A Balanced Trim Single Stage Pressure Reducing Regulator; 1/2" Size, Cv=0.60; 316L Stainless Steel Body, 316L Stainless Steel Spring Chamber; 302 Stainless Steel With PTFE Ring Diaphragm, PCTFE Seat, 316L Stainless Steel Seat Retainer And Poppet, Inconel X-750 Poppet Spring, PTFE Back-Up Ring, Port Configuration B; 1/2" MNPT X 1/2" Compression Fittings; 3-250 PSIG Range Spring; 0-160 PSIG Outlet Gauge; No Inlet Gauge