Which brand is better, pneumatic wear-resistant dust air butterfly valve code or electric ball valve?

3.2 The sealing mechanism of the floating pneumatic butterfly valve is shown in Figure 1 (a). Since there is no fixed support at the lower end of the ball, when the floating pneumatic butterfly valve is closed, the ball will produce a certain floating amount (displacement) under the effect of the medium pressure, leave the sealing seat at the inlet end and press it against the sealing seat at the outlet end, so that the medium will be blocked at the sealing seat at the outlet end. That is to say, the floating pneumatic butterfly valve actually only has the sealing seat at the outlet end to play a sealing role, while a small floating gap is kept between the sealing seat at the inlet end and the ball.

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First, the valve seat of pneumatic butterfly valve has good sealing performance. Specifically, the sealing ring made of elastic materials such as polytetrafluoroethylene will not leak, and with the increase of medium pressure, the valve sealing capacity of butterfly valve will become better and better;

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