Common Faults Of Pneumatic Butterfly Valves And Their Elimination Methods

Sanitary Butterfly Valve Common faults and elimination methods!
Testing and adjustment of pneumatic butterfly valves
1. Whether it is manual, pneumatic, hydraulic, or electric, all parts of the butterfly valve are strictly debugged before leaving the factory. When rechecking the sealing performance, the user should evenly fix both sides of the inlet and outlet, close the butterfly valve, apply pressure to the inlet side, and observe whether there is leakage on the outlet side. Before the strength test of the pipeline, the disc plate should be opened to prevent damage to the sealing pair.
2. Although the pneumatic butterfly valve is strictly inspected and tested before leaving the factory, there are also some products that automatically shift the screw during transportation and need to be readjusted. Pneumatic, hydraulic, etc. Please read the instruction manual of the matching drive device.
3. The opening and closing strokes of the control mechanism of the electric transmission butterfly valve have been adjusted when leaving the factory. In order to prevent the wrong direction when the power is turned on, the user should first open the manual to the half-open position after turning on the power for the first time, and then press the electric switch to check that the direction of the indicator disk is consistent with the closing direction of the valve.
Common faults and elimination methods of pneumatic butterfly valves
1. 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 the butterfly plate. The butterfly plate is never allowed to be closed before cleaning to avoid damaging the sealing ring.
2. The butterfly plate is recommended to use a butterfly valve flange for the matching flange.
3. The position installed in the pipeline is preferably vertical, but not inverted.
4. The flow needs to be adjusted during use, and the worm gear box is used for control.
5. For butterfly valves that are opened and closed more times, open the worm gear box cover in about two months to check whether the butter is normal, and keep an appropriate amount of butter.
6. Check that each connection part requires compression, which ensures the sealing of the packing and the flexible rotation of the valve stem.
7. 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, an outlet flange must be installed to prevent the sealing ring from being overloaded and over-positioned.
8. Check the valve stem installation and use effect regularly and eliminate any faults in time.