The butterfly valve is used to open and close the circular butterfly plate that rotates with the pungent to achieve the action of the electric valve, which is mainly used as a cut-off valve. It can also be designed to have the function of adjustment or paragraph valve and adjust the disc. Cast iron butterfly valve is more and more used in the low pressure caliber pipes.
The butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. And it only need to rotate 900 to open and close quickly with simple operation, at the same time, the electric valve has good fluid control characteristics.
When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, so it has better flow control characteristics.
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