MODEL "HP" PRESSURE REDUCING REGULATOR,GRAPHITE/NBR GASKETS 1/2" SIZE; WCB BODY & SPRING CHAMBER; S1 TRIM: 316SST METAL SEAT,302SST DIAPHRAGM; OPT-30: 600 LB RAISED FACE FLANGES; 30-150 PSIG RANGE SPRING; OPT-1+6: DIFFERENTAL CONSTRUCTION WITH CLOSING CAP;