Routine maintenance of all welded pneumatic ball valve and maintenance during grease injection The problem of grease injection amount is often ignored when grease injection is conducted to the grease injection valve of all welded pneumatic ball valve. After the grease gun is refueled, the operator selects the grease valve and grease connection mode to conduct grease injection. In the process of grease injection, on the one hand, the amount of grease injection is small and insufficient, and the sealing surface is accelerated to wear due to the lack of lubricant. On the other hand, excessive grease injection causes waste. The reason is that the sealing capacity of different valves has not been accurately calculated according to the nominal diameter of the valve, and the sealing capacity has been calculated, and then an appropriate amount of grease has been reasonably injected.

Why some pipeline systems must use pneumatic butterfly valves
Pneumatic butterfly valves and rubber pipes are pipe fittings commonly used in management systems, but some management systems must use pneumatic butterfly valves in design and construction. Why? Let's take a look at the answers given by the manufacturer of pneumatic butterfly valve:
Although the rubber pipe is soft and has strong fatigue resistance, it is relatively weak compared with the pneumatic butterfly valve in terms of pressure bearing, temperature resistance and aging resistance. In addition to the pressure and temperature in the pipeline system, there are also some influences such as fatigue, corrosion, vibration, squeezing, impact, etc. Therefore, it is most appropriate to use pneumatic butterfly valves to compensate for the displacement of the pipeline position when possible.
The pneumatic butterfly valve can be bent at will, and the internal stress caused by bending is very small. Therefore, it can bring great convenience to the pipeline design and plays an important role in the safe operation of the pipeline system. In the design of pipeline system, if the pneumatic butterfly valves are connected in series on the connecting channel, it can not only accept the noise generated by the unit vibration, but also absorb the noise caused by the fluid pulsation in the pipeline system.