Electric soft-seal butterfly valve is a type of electric control valve that uses a circular disc rotating with the valve stem to open and close the flow passage. It is mainly used for on-off and isolation in pipeline systems.
This valve features a simple structure, compact size, light weight, low cost, and convenient operation. It can also be used for flow regulation. With low flow resistance, electric butterfly valves in medium and large diameters provide a large effective flow area in the fully open position.
Opening and closing are fast and effort‑saving, as the disc only needs to rotate 90° to complete the action. Excellent sealing performance can be achieved under low pressure conditions.
Common sealing materials include nitrile rubber, fluororubber, food‑grade rubber, and PTFE lining, ensuring reliable and tight sealing.
Among related types, the hard-seal butterfly valve adopts a composite metal sheet structure, combining the advantages of metal hard sealing and elastic soft sealing. It maintains outstanding sealing performance even under low-temperature working conditions.
