Butterfly Valve Testing And Installation And Common Troubleshooting Methods

1. Test and adjustment of Lined Butterfly Valve

1. Whether it is manual, pneumatic, hydraulic or electric, all components of butterfly valve products 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 butterfly valve products are 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 supporting drive device.

3. The opening and closing strokes of the control mechanism of the electric transmission butterfly valve have been adjusted before 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 the power is turned on 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.

2. Common faults and elimination methods

1. Before installation, confirm whether the performance of our product and the medium flow direction arrow are consistent with the working conditions, and clean the inner cavity of the valve. It is not allowed to have foreign matter 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. It is recommended to use a special flange for butterfly valves, that is, HGJ54-91 socket welding steel flange, for the matching flange of the butterfly plate installation.

3. The best position for installation in the pipeline is vertical installation, but it cannot be inverted.

4. The flow needs to be adjusted during use, and there is a worm gear box for control.

5. 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. The appropriate amount of butter should be maintained.

6. Check that each connection part requires compression, which can ensure the bee-likeness of the packing and the flexible rotation of the valve stem.

7. Metal-sealed butterfly valves are not suitable for installation at the end of the pipeline. If they must be installed at the end of the pipeline, they must be equipped with outlet flanges to prevent the sealing ring from being piled up and over-positioned.

8. Valve stem installation and use response: Regularly check the valve use effect and eliminate any faults in a timely manner.