Model "DA1" Pressure Reducing Regulator (Series I); Body Size 2",Standard Diaphragm Construction; Cf3m Body, 316l SST Spring Chamber; 17-4ph SST Trim, 316l SST Cage, Gf-Tfe Seat, Fkm Diaphragm,;Fkm Static Seal, Tfe Cap W/Fkm Energizer Dynamic Seal, Gftfe Wiper; Npt End Connection; 30-90 PSIG Range Spring; Internal Sensing, Standard - Flow To Open Direction