How to Avoid Failure of Butterfly Valve in Use
WATO Wuhan Weituo Fluid Equipment Control Equipment Co., Ltd
Butterfly valve is a widely used valve, originated in the 30 s of last century, butterfly valve is a 90 degree switch, or adjust the flow of a valve, due to the butterfly valve structure is simple, small size, light weight, simple operation, resulting in butterfly valve in many conditions can be applied. Butterfly valve connection flange connection, wafer type connection, welding connection, etc., can also be based on different working conditions of the medium to choose different materials, butterfly valve can be made of cast iron, cast steel, stainless steel and so on. Of course, in the use of the process will inevitably have a fault, so we should try to avoid the butterfly valve in the use of the process of failure.
Butterfly valve installation use matters needing attention:
1. Before installation, confirm whether the product performance and medium flow arrow of our factory are consistent with the movement conditions, and insert and wash the inner cavity of the valve. Impurities and foreign matters on the sealing ring and butterfly plate are not allowed. Before cleaning, the butterfly plate is never allowed to be closed to avoid damage to the sealing ring.
2. It is recommended to use special flange for disc valve for disc plate installation, namely HGJ54-91 socket welding steel flange, as shown in Figure 3
3. The best position for installation in the pipeline is vertical installation, but it cannot be inverted.
4, the use of the need to adjust the flow, a worm gear box to control.
5. For butterfly valves with more opening and closing 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 the connection parts of the requirements of compression, that is, to ensure that the packing of the bee, but also to ensure that the stem rotation flexible.
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, the matching outlet is required to prevent the sealing ring from overstock and overposition.
8. The valve stem installation and use reaction regularly check the use effect of the valve, and eliminate the failure in time.
