The main reasons for the failure to close the high-temperature butterfly valve are as follows:
OneTransmission failure:
The transmission of the butterfly valve may be faulty, such as damage to the transmission mechanism, excessive gear clearance, etc., resulting in the inability to completely close the butterfly valve.
IIPoor sealing performance:
There may be problems with the sealing performance of a high-temperature butterfly valve, such as poor seat sealing, poor plate and seat fit, etc., which cannot be closed completely.
3. ButterfliesPlate deformation:
At high temperatures, the butterfly valve disc may be affected by temperature and deform, making it impossible to close the butterfly valve completely.
FourthStem bending:
The stem of a butterfly valve may bend, causing the disc to not close completely.
FiveSpring failure:
High-temperature butterfly valves are usually equipped with springs to increase the closing force, and if the spring fails, the disc cannot close completely.
In actual work, the high-temperature butterfly valve should be checked and maintained in time, and the transmission device should be cleaned and lubricated regularly to ensure the normal operation of the valve. If the problem of insufficient closure is found, the fault should be eliminated in time, and the corresponding parts should be repaired or replaced according to the actual situation.
Fujian Detersen valve***