MODEL 1049 SALES KIT FOR PRODUCT CODE: PVD3VDV7A; PILOT OPERATED VENT VALVE CARBON STEEL BODY WITH FLAME SCREEN; 4" INLET X 6" OUTLET ASME CLASS 150# RF FLANGES; FKM SOFT SEATS; INTERNAL SENSING, SST PILOT FILTER ELEMENT, PILOT EXHAUST TUBED TO MAIN VALVE OUTLET, WITH BACKFLOW PREVENTER; VITON (FKM) ACTUATOR DIAPHRAGM