Common faults of pneumatic plug valves include the following categories:
1. Air leakage phenomenon:
It may be caused by the aging, wear and damage of the sealing ring of the pneumatic plug valve. The solution is to replace the sealing ring or clean the sealing surface.
2. Unable to open and close:
It may be caused by the pneumatic actuator of the pneumatic plug valve being old or malfunctioning. The solution is to replace the pneumatic actuator.
3. Inaccurate itinerary:
It may be caused by sensor failure of the pneumatic plug valve, transmission system failure, etc. The solution is to replace the sensor or repair the drivetrain.
4. Premature pressure relief:
It may be caused by the blockage of the pressure relief hole of the pneumatic plug valve or the failure of the pressure relief valve. The solution is to clean the pressure relief hole or replace the pressure relief valve.
In order to avoid the occurrence of the above failures, pneumatic plug valves need to be maintained and maintained regularly, such as cleaning and lubrication, replacing sealing rings, checking and adjusting the transmission system, etc. At the same time, the following matters need to be paid attention to when using pneumatic plug valves:
1. Before operation, check whether the air source is normal to prevent malfunction caused by too low or too high air source pressure.
2. When operating the pneumatic plug valve, avoid being too rough to avoid damaging the sealing ring and other components.
This article is reproduced from Baidu Baijia account: Detson Valve Knowledge Lecture. If you have any objection, please contact us to delete it.