What do specifications and models of Jiayuguan electric valve butterfly valve represent? 1. Replacement of diaphragm of pneumatic actuator During the use of pneumatic three-way ball valve, the diaphragm in the pneumatic diaphragm actuator will be subject to expansion and contraction, so it is prone to fatigue damage. It is suggested that rubber diaphragms of the same specification should be found during replacement. In the tightening stage, the diaphragm can be stressed evenly without causing leakage of the regulating valve or damage to the diaphragm.
、 Pneumatic ball valve is a new type of valve, which has the following advantages:
1. The fluid resistance is small, and its resistance coefficient is equal to that of pipe sections with the same length.
2. Simple structure, small volume and light weight.
3. It is tight and reliable. The sealing surface material of the ball valve is widely made of plastic, with good sealing performance. It has also been widely used in the vacuum system.
4. Convenient operation, fast opening and closing, 90 ° rotation from full opening to full closing, convenient for remote control.
5. Easy maintenance, simple structure of pneumatic ball valve, generally movable sealing ring, easy removal and replacement.
6. When the valve is fully opened or closed, the sealing surfaces of the ball and valve seat are isolated from the medium. When the medium passes through, it will not cause erosion of the valve sealing surface.
7. It has a wide range of applications, ranging from a few millimeters to several meters in diameter, from high vacuum to high pressure.
8. Because the power source of the pneumatic ball valve is gas, it is generally 0.2-0.8MPa, which is relatively safe. If the pneumatic ball valve leaks, compared with the hydraulic and electric valves, the gas can be discharged directly, which does not pollute the environment and has high safety.
9. Compared with manual and turbine rotating ball valves, pneumatic ball valves can be configured with large caliber (manual and turbine rotating ball valves are generally under DN300 caliber, and pneumatic ball valves can reach DN1200 caliber)
