The valves installed on the process pipelines or equipment often have various failures due to factors such as medium properties, service environment, operation frequency and product quality, which sometimes not only affect production but also bring disasters. Therefore, the protection shall be strengthened and the failures shall be eliminated in time. For example:
Fault phenomenon: the sealing ring is not tight.
Cause of fault:
1. The valve seat and valve body do not fit tightly;
2. The auxiliary tools used to close the valve are improper and too tight.
Treatment method: 1. Repair the sealing ring;
2. Do not open or close the valve with the force bar.