Model SLR-1 Pressure Reducing Regulator W/Self-Relieving Loader; Body Size 3/4",; Carbon Steel Body & Carbon Steel Loading Chamber; 17-4ph SST Trim, 316l SST Cage, Pa Seat, Bc Diaphragm,;Nbr Static Seal, O-Ring Dynamic Seal; 300 Lb Raised Face Flanges; Lower Spring 2-5 PSIG Range; Internal Sensing, Standard - Flow To Open Direction; 1/4" Size Npt, Loader, Brass Body & Spring Chamber, Self-Relieving,;SST Trim, Tfe Seat, Spring Range 10 - 750 PSIG; Brass Filter, Copper Tubing, Brass Fitting; Opt-56: Special Cleaning Per Spec #S-1542