Do You Know Several Pneumatic Butterfly Valve Failures And Elimination Methods?

Sanitary Butterfly Valve is composed of a pneumatic actuator and a butterfly valve, so it has the advantages of easy operation and simple structure of butterfly valves, and is also widely used in chemical, pharmaceutical and other industries. And because of the assistance of electric actuators, the development of butterfly valves has reached a new level.
When selecting an electric device for a pneumatic butterfly valve lifting stem valve, attention should be paid to the valve stem diameter value allowed to pass, and the valve stem diameter must be less than this value. In addition, for multi-turn electric devices, requirements for the height of the valve stem cover should also be put forward when selecting. Rotating stem valves may not be equipped with valve stem covers.
Pneumatic butterfly valves are a type of electric valve and electric regulating valve. The main connection methods of pneumatic butterfly valves are: flange type and clamp type; the main sealing forms of pneumatic butterfly valves are: rubber seal and metal seal. Pneumatic butterfly valves control the switch of butterfly valves through power supply signals. This product can be used as a cut-off valve, control valve and check valve for pipeline systems. It is equipped with a manual control device. Once a power failure occurs, it can be temporarily operated manually without affecting the use.
Pneumatic butterfly valves are mainly composed of pneumatic actuators and butterfly valves. When we use pneumatic butterfly valves, some faults often occur. If we cannot eliminate the faults in time, it will cause certain impacts. Therefore, it is very important to quickly and accurately eliminate the faults of pneumatic butterfly valves. At present, our common pneumatic butterfly valve faults and elimination methods are as follows:
1. The position installed in the pipeline is vertical, but not inverted.
2. For butterfly valves with a large number of openings and closings, open the worm gear box cover in about two months to check whether the butter is normal, and keep an appropriate amount of butter.
3. Metal-sealed butterfly valve products are not suitable for installation at the end of the pipeline. If they must be installed at the end of the pipeline, the outlet flange must be installed to prevent the sealing ring from being piled up and over-positioned.
4. The disc plate installation flange is recommended to use a disc valve flange, that is, the HGJ54-91 socket welding steel flange.
5. The valve stem installation and use response should regularly check the valve use effect and eliminate the fault in time.
6. Check that each connection part requires compression, which can ensure the sealing of the packing and the flexible rotation of the valve stem.
7. The flow needs to be adjusted during use, and the worm gear box is used for control.
8. Before installation, confirm whether the performance of our product and the medium flow direction arrow are consistent with the motion conditions, and clean the inner cavity of the valve. No foreign matter is allowed to be attached to the sealing ring and butterfly plate. The butterfly plate is never allowed to be closed before cleaning to avoid damaging the sealing ring.