MODEL 1049 SALES B KIT; PILOT OPERATED VENT VALVE STAINLESS STEEL BODY; 2" INLET X 3" OUTLET ASME CLASS 150# RF FLANGES; FKM SOFT SEATS; OPTION 1: WITH INTERNAL SENSING, SST PILOT FILTER ELEMENT, PILOT EXHAUST TUBED TO MAIN VALVE OUTLET; VITON (FKM) ACTUATOR DIAPHRAGM; 4.0" - 12.0" wc Pressure Range