How to choose the correct size and type of vacuum flapper valve

How to correctly choose the size and type of vacuum flapper valve

Butterfly valve is suitable for various media such as water, steam, oil, air, gas, etc. The main features of D973 electric clamp hard seal butterfly valve are:

<1> Applicable temperature -20~+425°C;

<2>High working pressure, wear resistance, long service life and quick opening and closing time;

<3> D973 electric clamp hard seal butterfly valve has good sealing performance, with automatic centering effect and small leakage;

Valves with metal seals generally have a longer life than elastomeric seals, but are difficult to seal completely. Metal seals can accommodate higher operating temperatures, while elastomeric seals have temperature-limited defects.

If a butterfly valve is required for flow control, the main choice is the correct size and type of valve. The structural principle of the butterfly valve is especially suitable for making large diameter valves. Butterfly valves are widely used not only in general industries such as petroleum, gas, chemical, and water treatment, but also in cooling water systems for thermal power plants.