Solutions to common air leakage problems in soft-sealed gate valves

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This post was last edited by neo123456 on 2017-9-8 at 10:16. Air leakage in soft-sealed gate valves is a very troublesome issue; after numerous tests and studies conducted by Huaguang Valve Factory, the underlying principles and solutions were finally identified. By following the treatment methods provided by Huaguang Valve Factory at www.huaguangv.com, it is possible to resolve the problem of air leakage in soft-sealed gate valves. Common air leakage problems with soft-sealed gate valves are as follows: 1. Air leakage from the solenoid valve on the cylinder, which may be caused by excessive pressure in the pressure reducing valve. 2. The exhaust port of the cylinder is leaking, as the sealing rings at the seals between the two moving parts inside the cylinder and the cylinder block have worn out. 3. Air leakage occurs at the upper and lower parts of the cylinder; this is because the sealing rings at the seal between the actuator and the cylinder fail to provide a proper seal due to the frequent movement of the actuator. 4. Besides the 3 situations mentioned above, there is another scenario that can cause air leakage in the cylinder: damage to the spring inside the cylinder, resulting from insufficient force application, which can also lead to incomplete closing. The air leakage problem of the above 4 types of soft-sealed gate valves can be solved by the following methods: 1. Replace the seal ring of the actuator. 2. Replace the seal ring at the cylinder. 3. Adjust the air pressure of the pressure reducing valve to 3-5 kilograms, or release air from below the solenoid valve several times; sometimes it may also be necessary to replace the solenoid valve. 4. Replace the spring in the cylinder. Reminder: Issues should be addressed based on the actual air leakage situation of one’s own soft-sealed gate valves, to avoid causing secondary problems.