Model ULR-1 Rev A Pressure Reducing Regulator With Unloader; 2-1/2" Line Size; Carbon Steel Body With Carbon Steel Loading Chamber; P9 17-4PH Stainless Steel Trim, 316L Stainless Steel Cage, PTFE Seat, Fluorosilicone Diaphragm, Fluorosilicone Static Steal, Stainless Steel/PTFE U-Cup Dynamic Seal; ASME 150 Raised Face Flanged End Connections; Lower Spring 2-5 PSIG Range; Internal Sensing With Standard Flow To Open Direction; With Unloader: 1/4" NPT, Bronze Body And Spring Chamber, S2 Trim, Stainless Steel Metal Seat And Diaphragm, Spring Range 100 - 175 PSIG; Brass Filter, Copper Tubing, Brass Fittings