A butterfly valve is a quarter-turn valve that works similarly to a ball valve. The butterfly is a disk connected to a rod or spindle that opens and closes. The butterfly valve closes when the rod rotates the disc 90° to a position perpendicular to the flow direction, thus restricting flow. It opens when the disc rotates back to allow the flow of media. Butterfly valves are used across many industries for throttling, on-off, or modulating services to control the flow of media (gas, liquid, or slurries) through industrial systems. They allow fluid flow in only one direction.

STL Power & Process Controls can source and supply all types of Butterfly valves.