Model ULR-1 Rev A Pressure Reducing Regulator With Unloader; Body Size 1-1/2",; Bronze Body & Loading Chamber; Monel Trim, Pa Seat, Fk Diaphragm;Fk Static Seal, SST/Tfe U-Cup Dynamic Seal; Mates With ASME 150 Flat Face Flanges; Lower Spring 2-5 PSIG Range; Internal Sensing With Standard Flow To Open Direction; With Unloader, 1/4" Size Npt, SST Body & Spring Chamber,;S2 Trim, SST Metal Seat And Diaphragm, Spring Range 40 - 125 PSIG; Brass Filter, Copper Tubing, Brass Fitting; Opt-56: Special Cleaning Per Spec #S-1542