Is there anything wrong with the sales telephone of pneumatic hard seal wafer butterfly valve? Generally, metal sealed valves have a longer service life than elastic sealed valves, but it is difficult to achieve complete sealing. Metal seals can adapt to higher temperatures, while elastic seals are subject to temperature restrictions.
、 The ball of the floating ball pneumatic butterfly valve can float. The structure of this butterfly valve is very simple and easy to operate. Because the pressure is used to switch, this type of pneumatic butterfly valve is not suitable for high-pressure butterfly valves in order to avoid damaging the sealing ring. The pneumatic butterfly valve with fixed ball is suitable for high-pressure butterfly valve. The working principle of the fixed ball is to use the movement of the butterfly valve seat to work, and use the valve seat to push the seal ring onto the ball to seal. Elastic butterfly valve means that the ball is elastic. This kind of butterfly valve is used under the condition of high pressure and high temperature.
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