Model DA0 Rev E Pilot Operated Pressure Reducing Regulator; 3/4" Line Size; Carbon Steel Body With Carbon Steel Loading Chamber; 17-4PH Stainless Steel Trim, GF-TFE Seat, RTFE Static Seal, Piston Ring Assembly And Wiper Dynamic Seal; NPT End Connections; Lower Spring 2-5 PSIG Range; Spring Loaded Pilot, Flowing Fluid As Loading, Type #90S0, Ductile Iron Body, Gas Or Steam Service; 2-50 PSIG Range Spring