MODEL "HP" SALES A KIT FOR PRODUCT CODE: 3C6-DS17-82X56157A; PRESSURE REDUCING REGULATOR,GRAPHITE/NBR GASKETS 1" SIZE; LCC STEEL BODY & SPRING CHAMBER FOR TEMPERATURES DOWN TO -50 F; S1 TRIM: 316SST METAL SEAT,302SST DIAPHRAGM PER SPQ NUMBER 56157 OPT-15: STELLITED SEAT SURFACE