Model SLR-2 Pressure Reducing Regulator W/Non-Relieving Loader; Body Size 2",; Cf3m Body, 316l SST Loading Chamber; Monel M Trim, Pa Seat, Fk Diaphragm;Fk Static Seal, SST/Tfe U-Cup Dynamic Seal; Npt End Connection; Lower Spring 2-5 PSIG Range; Internal Sensing, Standard - Flow To Open Direction; 1/4" Size Npt, Loader. SST Body & Spring Chamber, Non-Relieving,;SST Trim, Tfe Seat, Spring Range 2 - 50 PSIG; SST Filter, SST Tubing, SST Fitting; Opt-55: Cleaned For Oxygen Service Per Spec #S-1134