MODEL "POSR-2" PILOT ONLY KIT FOR PRODUCT CODE:WB1-BS27-6A000000A; PILOT OPERATED PRESSURE REDUCING REGULATOR,TFE GASKETS 1" SIZE; MAIN VALVE - WCB BODY, SST CYLINDER, DUCTILE IRON BONNET, PILOT VALVE - DUCTILE IRON BODY & CAST IRON SPRING CHAMBER, MOUNTING POSITION "H"; S2 HARD TRIM: MAIN-416SST SEAT,17-4PH PLUG,PILOT-416SST,302SST DIAPHRAGM