1. The bolts welded onto the valve disc should not be excessively long, as this can cause them to protrude into the flow passage within the valve body. This may lead to misalignment of the sealing surface, resulting in improper seating and loss of sealing effectiveness. During assembly, always check the bolt length and ensure that the sealing surfaces are fully engaged and properly aligned.
2. Choose the appropriate adjustment pad, ensuring its thickness is slightly less than or equal to the step height of the valve disc's sealing surface. This will allow the soft gasket to sit flush with the sealing surface, creating a tight and even seal without any gaps or uneven pressure distribution.
3. To prevent the compression nut from loosening or falling off, it should be tightened properly and then slightly loosened after tightening. This ensures a secure fit while avoiding over-tightening, which could damage the components or make future adjustments difficult.
4. When selecting a valve, consider the properties of the fluid medium it will handle. Factors such as corrosion resistance and thermal stability must be taken into account to avoid premature failure due to chemical attack or thermal expansion.
5. If the valve seat's sealing surface is severely damaged, it should be replaced. However, if the valve core remains in good condition, it can still be used with a new valve seat of the same specification, provided the dimensions and tolerances match.
6. When adjusting the valve, mark the position to prevent sudden or excessive opening. This helps protect the gasket from unnecessary stress, extending its service life and maintaining the integrity of the seal.
By following these guidelines, you can significantly improve the performance and longevity of your hard-seal butterfly valves. Proper installation, regular maintenance, and attention to detail are essential for optimal operation in various industrial applications.
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Tag: China Hard Seal Butterfly Valve Protective Measures
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