Model P5 Rev A Piston Sensing Single Stage Pressure Reducing Regulator; 1/2" Line Size, Cv=0.06; 316L Stainless Steel Body And Spring Chamber; FKM O-Ring, 316L Stainless Steel Piston, Seat Retainer, and Poppet, Inconel X-750 Poppet Spring, Port Configuration F; NPT End Connections; 50-1500 psi Range Spring; 0-2000 psi Outlet Gauge; 0-2000 psi Inlet Gauge