Model P3, Rev A, Two Stage Cylinder Gas Pressure Reducing Regulator; 1/4" Size, Cv=0.20; 316L Stainless Steel Body And Spring Chamber; 302 Stainless Steel With PTFE Ring Diaphragm, PCTFE Seat, 316L Stainless Steel Seat Retainer And Poppet; Inconel X-750 Poppet Spring; Port Configuration H; Special End Connection, ; 3-250 PSIG Range Spring; No Outlet Gauge; No Inlet Gauge; Tamper Proof