MODEL "DAP" PILOT OPER. PRESSURE REDUCING REGULATOR(SERIES IV-P)PORV BODY SIZE DN50, LARGE PISTON CONSTRUCTION; CF3M SST BODY & 316L SST COVER DOME; SALES KIT A; SPECIAL TRIM MATERIALS; SPECIAL; PER SPQ NUMBER 52942; 316 SST METALLIC TRIM; FLUOROCARBON STATIC SEALS, GFTFE PISTON RING ASSEMBLY WITH EIGILOY ENERGIZER DYNAMIC SEAL; CTFE SEAT;