MODEL "HP" PRESSURE REDUCING REGULATOR,GRAPHITE/NBR GASKETS 1" SIZE; SALES KIT B; LCC STEEL BODY & SPRING CHAMBER FOR TEMPERATURES DOWN TO -50 F; S1 TRIM: 316SST METAL SEAT,302SST DIAPHRAGM; 30-150 PSIG RANGE SPRING; PER SPQ NUMBER 56157 OPT-15: STELLITED SEAT SURFACE; GASKET MATERIAL SUITABLE FOR -50F TO +400F;