The types of pneumatic ball valve

pneumatic valve, pneumatic ball valve floating ball ball 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. Floating ball ball 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. , the fixed ball ball pneumatic valve pneumatic valve ball is fixed, does not produce mobile after compression. Fixed ball 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. To reduce the number of 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. Pneumatic valve, v-shaped ball the ball belongs to fixed pneumatic ball valve pneumatic valve, is also a single pneumatic valve, pneumatic valve seat seal ball regulation performance is the best in the pneumatic ball valve, flow characteristic is equal percentage, adjustable ratio of:. The v-shaped incision and metal shearing action between the pneumatic valve seat, especially suitable for fiber, tiny solid particles and slurry medium. , 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. Product features, pneumatic three-way ball valve adopts the integration of structure in the structure, surface pneumatic valve seat seal, flange connection, high reliability, realize the lightweight design, the 3-way ball core points T and L, and long service life, the flow capacity is big, small resistance, pneumatic ball valve according to the acting points of two kinds of single and double action type, the characteristic of single acting is once the power failure occurs, pneumatic ball valve will be in a state of control system requirements.