Ventilation butterfly is a non-sealed butterfly valve, widely used in the production process of medium temperature ≤300 ℃, nominal pressure 0.25Mpa in the field of building material metallurgy, mining, electricity and other pipelines for connecting, opening, closing or adjusting medium quantity.
Features:
1、Opening and closing easily and quickly, labor- saving, fluid resistance, can operating often；
2、Simple structure, small size and light weight；
3、Carrying mud, accumulation quantity of fluid in the pipe mouth is the least；
4、Achieving a good seal under low temperature；
5、Perfect adjusting function；