Model P5, Rev A, Piston Sensing Single Stage Pressure Reducing Regulator; 1/2" Size, Cv=0.06; 316L Stainless Steel Body And Spring Chamber; Viton O-Ring, 316l SST Piston, 316l SST Seat Retainer, 316l SST Poppet;Inconel X-750 Poppet Spring, Port Configure F; FNPT End Connection; 50-1500 PSIG Range Spring; 0-2000 PSIG Outlet Gauge; 0-600 PSIG Inlet Gauge