Does the symbol of pneumatic ventilation (regulation) butterfly valve need a motor? The ball and valve seat seal ring are made of metal materials, and the sealing pressure is very high. The pressure relying on the medium itself cannot meet the sealing requirements, so it is necessary to apply external force. This valve is suitable for high temperature and high pressure media. An elastic sphere obtains elasticity by opening an elastic groove at the lower end of the inner wall of the sphere. When closing the channel, use the wedge head of the valve rod to expand the ball and compress the valve seat to seal. Loosen the wedge head before rotating the ball, and then the ball will return to its original shape, so that there is a small gap between the ball and the valve seat, which can reduce the friction and operating torque of the sealing surface.
、 The electric switch butterfly valve is widely used, and its role should not be underestimated! This is our electric on-off butterfly valve today. Xiao Bian has introduced so many electric and electric on-off valves to you. I don't know how you feel. Anyway, Xiao Bian has benefited a lot. I don't know if you have any new feelings. Because so many types of electric and electric on-off valves not only create new ideas for valves and inject new power, but also bring new convenience and new atmosphere to our life.
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