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Fakai Valve Factory Site: Yongxing Industrial Zone, Longwan District, Wenzhou City Tel: 0577-88767789
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Contact: Mr. Wang Email: 1552028357@qq.com
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Ventilation butterfly valve principle and characteristics

Release Date: May 04, 2017

Ventilation butterfly valve is a kind of non-closed butterfly valve , widely used in the production process of building materials, metallurgy, mining, electricity and other production medium temperature ≤ 300 ℃ nominal pressure of 0.1Mpa pipelines, used to communicate, open and close or adjust the amount of medium.

The ventilation butterfly valve is divided into manual and electric transmission, which can be driven by an electric motor or a turbine to drive the actuator to freely rotate the butterfly plate within 90 ° to achieve the purpose of opening and closing or adjusting the medium flow.


1. Convenient and quick opening and closing, labor saving, small fluid resistance, can be operated frequently.

2. Simple structure, small size and light weight.

3. Mud can be transported with minimal liquid accumulation at the mouth of the pipeline.

4. Good sealing can be achieved under low pressure.

5. Good regulation performance.

By connection method:

(1) Wafer type butterfly valve

(2) flange butterfly valve

(3) Lug type butterfly valve

(4) Welded butterfly valve