Valve body and bonnet joint leakage nut is not tight or uneven, can be readjusting.
1. Flange sealing surface damage (straight groove or groove, etc.) should be corrected.
2. If the gasket is damaged, it should be replaced with a new gasket.
Leakage in gate valve packing
1. If the packing gland is too loose, screw the nut used for packing gland evenly.
2. Packing rings are not enough, should be increased packing.
3. If the packing fails due to too long use or improper storage, it should be replaced with a new packing, and the joints between each ring should be staggered.
And the hidden valve is generally higher than the price of the rising bar; As the stress condition of the dark bar is worse than that of the bright bar, there are more faults. The valve stem of the blind stem may be corroded by the medium.
