Model P1 Rev A Single Stage Pressure Reducing Regulator; 1/4" Line Size, Cv=0.02; Brass Body With Aluminum 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 B; NPT End Connections; 2-25 PSIG Range Spring; No Outlet Gauge; No Inlet Gauge; Tamper Proof; Self-Relieving