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 A; FNPT End Connection; 2-50 PSIG Range Spring; No Outlet Gauge; No Inlet Gauge; Cleaned For Oxygen Service Per Cashco Specification S-1134