Flowserve Corporation 4-BX2-L3811A1V0NZ Butterfly Valve

Flowserve 4-BX2-L3811A1V0NZ BX2 4-inch Butterfly Valve is a 4-inch nominal-diameter valve from Flowserve's BX2 family, rated ASME 300. The full part number confirms the exact configuration: 4-BX2-L3811A1V0NZ. It features a stem designated H450 and a disk designated D4, identifying the internal components specified for this model. This BX2-series valve matches Flowserve's standard component coding for a 4-inch valve in this configuration, enabling precise matching with supporting parts and accessories within the BX2 family. The combination of 4-inch size and ASME 300 rating indicates suitability for higher pressure containment within the scope of typical industrial piping ratings. Because the information provided includes the precise part number, stem code, and disk code, buyers can verify compatibility with Flowserve catalogs and replacement parts.