People often say that people can't judge her just by looking at her appearance. The same is true for machines. Although the electric ball valve is small in size, its role and importance are unmatched by many large equipment.

3、 Elastic ball pneumatic ball valve The ball of the pneumatic ball valve is elastic. The ball and valve seat seal ring are made of metal materials, and the sealing pressure is very high. The pressure of the medium itself cannot meet the sealing requirements, so external force must be applied. 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 the channel is closed, use the wedge head of the valve rod to expand the ball and compress the valve seat until it is sealed. Loosen the wedge head before rolling 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 conflict of the sealing surface and the operating torque. Pneumatic ball valves can be divided into straight through type, three-way type and right angle type according to their channel orientation. The latter two ball valves are used to distribute media and change the flow direction of media.