MODEL "D" PRESSURE REDUCING REGULATOR,GRAPHITE/NBR GASKETS 1" SIZE; CF8M BODY,CAST IRON SPRING CHAMBER; SPECIAL TRIM MATERIAL; SOCKET WELDED TRI-CLAMP END CONNECTION, WETTED PARTS CLEANED TO SPEC S-1576; 30-80 PSIG RANGE SPRING; PER SPQ NUMBER 54470 316L SST TRIM WITH RULON SEAT; 302 SST DIAPHRAGM; OPT-4 STABILIZER