Model "DAP" Pilot Oper. Pressure Reducing Regulator(Series IV-P)PORV; Body Size 2",Large Piston Construction; Cf3m SST Body & 316l SST Cover Dome; 17-4 Ph SST Trim, 316l SST Cage, Ctfe Seat,;SST/Tfe U-Cup Static Seal, SST/Tfe U-Cup Dynamic Seal; Npt End Connections; Lower Spring 2-5 PSIG Range; Internal Sensing, With Loading Configuration