1. Both manual, pneumatic, hydraulic, and electric components of butterfly valves are strictly debugged before leaving the factory. When rechecking the sealing performance, users should fix both sides of the inlet and outlet evenly, close the butterfly valve, apply pressure to the inlet side, and observe whether there is leakage on the outlet side. Before conducting strength tests on the pipeline, the disc plate should be opened to prevent damage to the sealing pair.
2. Although the pneumatic butterfly valve has undergone strict inspection and experimentation before leaving the factory, there are still some products that have automatic screw displacement during transportation and need to be readjusted, pneumatically, hydraulically, etc. Please refer to the user manual of the supporting drive device.
3. The opening and closing stroke of the control mechanism has been adjusted when the electric drive disc valve leaves the factory. To prevent the power supply from being turned on in the wrong direction, the user should first turn on the manual switch to the half open position after the first power supply is turned on, and then press the electric switch to check that the direction of the indicator panel is consistent with the direction of the valve closing.
Common faults and elimination methods of pneumatic butterfly valves in water treatment equipment
1. Before installation, confirm whether the performance of our factory's products and the flow direction arrow of the medium match the operating conditions, and clean the valve chamber. There should be no impurities or foreign objects attached to the sealing ring and butterfly plate. Before cleaning, it is not allowed to close the butterfly plate to avoid damaging the sealing ring.
2. It is recommended to use a dedicated flange for butterfly valves, namely HGJ54-91 socket welded steel flange, for the installation of the disc plate.
3. The preferred position for installation in the pipeline is vertical installation, but it cannot be inverted.
4. During use, the flow needs to be adjusted and controlled by a worm gear box.
5. For butterfly valves that have been opened and closed frequently, after about two months, open the worm gear box cover and check if the butter is normal. An appropriate amount of butter should be maintained.
6. Check that all connecting parts are required to be tightly pressed to ensure 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 it must be installed at the end of the pipeline, it is necessary to install an outlet flange to prevent the sealing ring from accumulating and exceeding its position.
8. Regularly check the effectiveness of the valve during installation and use of the valve stem, and promptly eliminate any faults found.
