Model P3, Rev A, Two Stage Cylinder Gas Pressure Reducing Regulator; 1/2" Size, Cv'=0.06; Brass Body, 6061 Aluminum Spring Chamber; 302 Stainless Steel With Tefzel Ring Diaphragm, PCTFE Seat, 316L Stainless Steel Seat, Retainer, And Poppet, Inconel X-750 Poppet Spring, Port Configuration F; FNPT End Connections; 3-250 PSIG Range Spring; 0-160 PSIG Outlet Gauge; 0-2000 PSIG Inlet Gauge