The classification of the pneumatic ball valve

pneumatic ball valve can be divided into: the form of the structure of floating ball pneumatic valve, pneumatic fixed ball valve, elastic ball pneumatic valve and oil seal pneumatic valve; According to the channel can be divided into straight to type pneumatic ball valve, Angle type pneumatic ball valve and three-pass pneumatic ball valve, etc. , can be divided into the t-shaped and l-shaped three-pass two kinds. According to the connection work can be divided into the thread type connect pneumatic ball valve, pneumatic valve flange ball and three kinds of pneumatic welded ball valve.

pneumatic valve, floating ball,
pneumatic ball valve ball is floating, under the effect of medium pressure, the fitness ball produce certain displacement and compression at the outlet seal surface, guarantee the outlet seal.
the floating ball of pneumatic valve has simple structure, good sealing, but all spheres of work under medium load to export sealing ring, so want to consider to seal material can withstand the working load of sphere medium, under high pressure shock, sphere migration may occur. In this structure, is generally used in low pressure pneumatic ball valve.


, fixed pneumatic ball valve pneumatic ball valve ball is fixed, does not produce mobile after compression. Fixed pneumatic ball valve with floating pneumatic valve seat, after the medium pressure, mobile pneumatic valve seat, make the seal compression on the ball, to ensure the seal. Usually mounted on the upper and lower shaft with ball bearing, the operating torque is small, suitable for high pressure and large diameter of pneumatic valve.
in order to reduce the pneumatic ball valve operating torque and increase the reliability of the sealing, pneumatic valve oil seal ball appeared again in recent years, both betting special lubricant between the sealing surface, in order to form a layer of oil film, which increases the sealing, and reduce operating torque, suitable for pneumatic ball valve with high pressure, large diameter.

, elastic ball pneumatic ball valve ( The track ball pneumatic valve)
pneumatic ball valve of the sphere is elastic. Sphere and pneumatic seat sealing adopts metal materials, sealing pressure is very big, relying on the pressure of the medium itself already could not reach the requirements of sealing, must exert external forces. This kind of pneumatic valves are suitable for high temperature and high pressure medium.
elastic ball is on the lower end of the sphere wall open one elastic slot, and elasticity. When close the channel, using pneumatic stem wedge-shaped head make the ball rolling out with pneumatic pressure to seating. Wedge head before you turn the sphere are released, the sphere then restore the original prototype, appear very small gap between the sphere and the pneumatic valve seat, can reduce the sealing surface friction and operating torque.

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the v-shaped ball pneumatic valve ball belongs to fixed pneumatic ball valve pneumatic valve, is also a single pneumatic seat sealing ball valves, regulating performance is the best in the pneumatic ball valve, flow characteristic is the percentage of, such as: adjustable ratio. The v-shaped incision and metal shearing action between the pneumatic valve seat, especially suitable for fiber, tiny solid particles and slurry medium.

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pneumatic three-way ball valve pneumatic three-way ball valve with T and L. T can make three orthogonal pipes unicom and cut off the third passage, shunt, rivers. L can only connect two orthogonal pipes, cannot maintain the third pipeline connected each other, only assigned role.