How to avoid butterfly valve failure during use?

The butterfly valve is a widely used valve. It originated in the 1930s. The butterfly valve is a 90-degree switch or a valve that regulates flow. Due to its simple structure, small size, light weight, and simple operation, the butterfly valve is It can be applied in many working conditions. Butterfly valve connection methods include flange connection, wafer connection, welding connection, etc. Different materials can also be selected according to different working conditions. The butterfly valve can be made of cast iron, cast steel, stainless steel, etc. Of course, failures will inevitably occur during use, so how should we try to avoid malfunctions during use of the butterfly valve? Let's take a look together.

Notes for installation and use of butterfly valve:

1. Before installation, confirm whether the performance of our products and the arrow of the flow direction of the medium are consistent with the movement conditions, and the inner cavity of the valve is inserted and cleaned. It is not allowed to have foreign matter attached to the sealing ring and butterfly plate. Never before cleaning. It is allowed to close the butterfly plate to avoid damaging the sealing ring.

2. It is recommended to use the special flange for the butterfly valve, that is, the HGJ54-91 socket welding steel flange, as shown in Figure 3.

3. The best position for installation in the pipeline is vertical installation, but not upside-down installation.

4. It is necessary to adjust the flow during use, and it is controlled by a worm gear box.

5. For the butterfly valve with many opening and closing times, open the worm gear box cover in about two months to check whether the butter is normal. Keep a proper amount of butter.

6. ​​Check the tightness of each connection part, which not only guarantees the bee-like nature of the packing, but also ensures 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 needs to be equipped with an outlet flange to prevent the backlog of the seal ring and over-position.

8. Valve stem installation and use response Periodically check the valve use effect, and promptly remove any faults found.



Ningbo Baodi Plastic Valve Co., Ltd. is professional China PP Butterfly Valves Manufacturers and PP Butterfly Valves suppliers.Founded in 2006, the enterprise has established ISO9001 quality system to support the quality guideline: supported by Technology, Meticulously Researching, Professionally Manufacturing and Permanently Creating New Records. The first class production equipments and advanced manufacturing skills are introduced at the same time, involving KRAUSS-MAFFEL CPVC pipe production line and Haitian CPVC Plastic Molding Machine of 2800 tons. In order to ensure the quality of wholesale BUTTERFLY VALVES, the raw materials like CPVC and PVDF are wholly imported from Noveon (USA) and Atofina (France).