Suggestions for daily maintenance during operation ① Periodically check the tightness of the valve through the drain nozzle, and if there is internal leakage, deal with it according to the internal leakage treatment procedure; ② Inject a certain amount of fresh grease into the valve seat at the right time. The amount and frequency of grease injection depend on the frequency of valve movement. Generally, when the valve moves once, an appropriate amount of grease should be injected. The amount of grease injected each time is about 1/8 of the volume of the sealing system. This is to prevent impurities in the pipeline from entering the back chamber of the valve seat to affect the movement of the valve seat as much as possible, This will lead to seal failure and ensure that the sealing surface is always in.; moist; Status; ③ For valves that rarely move, move at least once a year, and inject appropriate lubricating grease at the same time. This can avoid the ball and valve seat gluing, and also avoid dry grinding when the ball moves, so as to protect the valve seat and the ball; ④ Before winter, the pneumatic ball valve shall be fully maintained, and the water in the valve chamber and actuator shall be drained to avoid freezing in winter and affecting the normal function; ⑤ Replace the lubricating grease in the gear transmission mechanism once a year; ⑥ Regularly check the valve diameter seal, and deal with any leakage in time; ⑦ Remove the rust and maintain the exterior.

What are the main functions of pneumatic butterfly valve?
1. Device stress of pipeline
In a complex pipeline system, there are often difficulties in the work of the device due to the constraints of space and location: formed pipes cannot be installed; Some cold corrections will inevitably occur when the pipes are bent, straightened and fitted. According to the pipe diameter and the detailed situation on site, the cold correction amount ranges from several millimeters to tens of millimeters, some hundreds of millimeters. Theoretically, the greater the amount, the higher the internal stress. These residual device stresses in the pipeline system are undoubtedly extremely hidden.
A section of bearing smooth oil duct in a certain type of starter has broken repeatedly in practice, which is caused by high stress of the device.
Since it can bend at will and the internal stress generated by bending under the condition of rated bending radius is very small, it can bring great convenience to the operation of the device and also play a certain role in ensuring the safe operation of the pipeline system. This is the main reason why some pipeline systems must use pneumatic butterfly valves.
2. Location of compensation pipeline
Due to the need of loading and unloading the mold, the movable cylinder on the curing press will move upward and downward. After repeated reciprocating movements, the copper serpentine tube will become tired and broken. Although it can continue to be used after repair, stopping for repair will cause time loss. Although the rubber tube has good flexibility and strong fatigue resistance, it is also a thin link in terms of pressure bearing, temperature resistance, aging resistance, etc. It cannot continue after several months of ordinary use. The good comprehensive performance of pneumatic butterfly valve is fully demonstrated here. In the general industrial category, in addition to pressure and temperature, there are often some harsh conditions such as fatigue, corrosion, vibration, pressing, impact, etc. Under such conditions, it is most appropriate to compensate for the displacement of the pipeline.
3. Absorb vibration
The air conditioning in the hall of a giant building is provided by the 6FWB unit fixed in the public room. The vibration of the unit passes through the bridge connecting the pipeline and is continuously transmitted to the air hall, with a noise value of 45dB. In such an environment, people always feel uncomfortable. After the improved design, the pneumatic butterfly valves are connected in series on the connecting pipes, which not only absorb the noise generated by the unit vibration locally, but also the noise generated by the fluid pulsation in the pipeline system. At this time, the noise value in the air hall is only 33dB, greatly improving the environment in the hall.
It can absorb vibration, which can not only improve the ability of fatigue and destruction of the system, but also reduce noise. This is the reason why some pipeline systems are used. It can also be noted that braided hoses can be used in the fire equipment industry.