Model "DA0" Pilot Operated Pressure Reducing Regulator(Series Iv-P); Body Size 1-1/4",Small Piston Construction; Carbon Steel Body & Carbon Steel Loading Chamber; 17-4ph SST Trim, Gf-Tfe Seat, Rtfe Static Seal, Pra+Wiper Dynamic Seal; Npt Female Screwed End Connections; Lower Spring 2-5 PSIG Range; Spring Loaded Pilot,Flowing Fluid As Loading,Type #90s0,Ci Body,Gas Or;Steam Service; 10-200 PSIG Range Spring; Steel Piping,Copper Tubing & Brass Fittings