The use of pneumatic ball valve Pneumatic ball valve is a commonly used control element. It evolved from a plug valve and has the same rotation of 90 degrees. The difference is that the plug body is a sphere with a circular through hole or passage through the axis. This article mainly introduces the use and advantages of pneumatic ball valve, hoping to help everyone better use the product. Pneumatic ball valve works by rotating the valve to make the valve open or blocked. Pneumatic ball valve switch is light, small size, can be made of a large diameter, reliable sealing, simple structure, easy maintenance, sealing surface and spherical surface often in a closed state, not easily eroded by the media, widely used in various industries. Pneumatic ball valve and plug valve are the same type of valve, only its closing part is a ball, the ball rotates around the center line of the valve body to open and close a valve. Pneumatic ball valve is mainly used in the pipeline to do fast cutting, distributing and changing the flow direction of the medium. The use of pneumatic ball valve Pneumatic ball valve advantages 1. The fluid resistance is small, and its resistance coefficient is equal to the length of the same length of pipe. 2. Simple structure, small size and light weight. 3. Close and reliable, currently the ball valve sealing surface material is widely used in plastics, good sealing, and has also been widely used in the vacuum system. 4. Easy to operate, fast opening and closing, as long as it rotates 90° from full-on to full-close, which facilitates remote control. 5. Easy maintenance, pneumatic ball valve structure is simple, the seal ring is generally active, removal and replacement are more convenient. 6. When fully open or fully closed, the sealing surfaces of the ball body and the valve seat are isolated from the medium. When the medium passes through, the sealing surface of the valve will not be eroded. 7. Wide range of applications, ranging from small to several millimeters in diameter to several meters in height, from high vacuum to high pressure. 8. Because the power source of the pneumatic ball valve is gas, it is generally 0.2-0.8 MPa, which is relatively safe. If the pneumatic ball valve leaks, the gas can be directly discharged relative to the liquid dynamics and the electric power, and it has no pollution to the environment and has a high safety. 9. Pneumatic ball valves can be configured in large diameters relative to manual and turbine turning ball valves (manual and turbine ball valves are generally below DN300, pneumatic ball valves can currently reach DN1200). Pneumatic ball valves have been widely used in petroleum, chemical, power generation, paper, atomic energy, aviation, rockets and other departments, as well as people's daily lives. The use of pneumatic ball valve Pneumatic valve can be divided according to structure One, floating pneumatic ball valve The ball of the pneumatic ball valve is floating. Under the effect of medium pressure, the ball can generate a certain displacement and press on the sealing surface of the outlet end to ensure the sealing of the outlet end. The structure of the floating pneumatic ball valve is simple and the sealing is good. However, the load of the ball bearing the working medium is all transmitted to the outlet sealing ring. Therefore, it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium. This structure is widely used in low and medium pressure ball valves. Second, fixed ball pneumatic valve The ball of the pneumatic ball valve is fixed and does not move after being pressed. The fixed ball ball valve has a floating valve seat. After the medium pressure, the valve seat moves and the seal ring is pressed against the ball to ensure the seal. Bearings are usually mounted on the upper and lower shafts of the ball, and the operating torque is small, suitable for high pressure and large diameter valves. In order to reduce the operating torque of the pneumatic ball valve and increase the reliability of the seal, oil seal ball valves have appeared in recent years. The special lubricant is injected between the sealing surfaces to form a layer of oil film, which enhances the sealing performance and reduces the operation. Torque, more suitable for high pressure large diameter ball valve. Third, the elastic ball pneumatic valve The ball of the pneumatic ball valve is elastic. The ball body and the valve seat seal ring are made of metal materials, and the specific pressure of the seal is large. The pressure of the medium itself cannot meet the requirements of the seal, and an external force must be applied. This valve is suitable for high temperature and high pressure media. The elastic ball is to open a flexible groove at the lower end of the inner wall of the ball to obtain elasticity. When closing the channel, use the wedge head of the valve stem to make the ball expand and seal with the valve seat. Loosen the wedge head before turning the ball, 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. Pneumatic ball valve according to its position can be divided into straight-through, three-style and right-angle. The latter two ball valves are used to distribute media and change the direction of the media. Lawn Mower Pulley,Lawn Mower Belt Pulley,Lawn Mower Idler Pulley,Lawn Mower Idler Pulley Taizhou Chenhui Machinery Manufacturing Co., Ltd , https://www.chenhuipulley.com