Model SLR-1 Pressure Reducing Regulator W/Self-Relieving Loader; Body Size 2",; 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; 150 Lb Raised Face Flanges; No Lower Spring; Internal Sensing, Standard - Flow To Open Direction; 1/4" Size Npt, Loader, Aluminum Body & Spring Chamber, Self-Relieving,;SST And Brass Internals W Buna-N Seat And Diaphragm;Spring Range 2 - 150 PSIG; Brass Filter, Copper Tubing, Brass Fitting