MODEL "POSR-2"; SALES B KIT; PILOT OPERATED PRESSURE REDUCING REGULATOR,TFE GASKETS 3" SIZE; MAIN VALVE - WCB BODY, SST CYLINDER, DUCTILE IRON BONNET, PILOT VALVE - DUCITLE IRON BODY & WCB SPRING CHAMBER, MOUNTING POSITION "H"; S2 HARD TRIM: MAIN-416SST SEAT,17-4PH PLUG,PILOT-416SST,302SST DIAPHRAGM;