What are the reasons for leakage of high-performance butterfly valves?
Reasons for leakage of butterfly valves with good performance:
1. It often appears in the connection parts of the valve body, valve stem, packing box, and high-performance butterfly valve body. Because it is cast, it causes sand holes. Therefore, when purchasing, it can be tested for availability through hydraulic testing;
2. If there are problems with the design and selection of the valve stem, it is necessary to ask professional personnel to handle the valve stem jamming during use;
3. The packing gland is loose, the sealing packing is not tight, the material selection of the packing is improper, or there are quality issues. It is necessary to purchase carefully when purchasing.