MODEL 1049 SALES KIT FOR PRODUCT CODE: PVD3CDW8A; PILOT OPERATED VENT VALVE CARBON STEEL BODY WITH FLAME SCREEN; 4" INLET X 6" OUTLET ASME CLASS 150# RF FLANGES; FFKM 1 SOFT SEATS; INTERNAL SENSING, SST PILOT FILTER ELEMENT, PILOT EXHAUST TUBED TO MAIN VALVE OUTLET, WITH BACKFLOW PREVENTER; VITON (FKM) ACTUATOR DIAPHRAGM WITH TEFLON LINERS