Valve is a commonly used fluid control device that can control the flow, pressure, flow direction, temperature, etc. of the fluid. However, since valves often face various working conditions and environments, various failures often occur.
Common valve failures and solutions:
1. Valve stuck: This is one of the most common valve failures. The reason may be that impurities such as sand, dirt or oxides in the valve block the valve stem, causing the valve to fail to open or close normally.
The solution is to disassemble the valve, remove internal impurities, and lubricate the surface of the valve stem.
2. Valve leakage: This is another common valve failure. The reason may be that the valve seal is damaged or the gap between the valve stem and the valve body is too large, causing the fluid to leak out of the valve.
The solution is to replace the seal or adjust the gap between the valve stem and the valve body.
3. Valve weakness: This failure is usually caused by overload or damage to the valve operating handle or motor.
The solution is to check and replace the operating handle or motor.
4. Valve vibration: This failure is often caused by too fast fluid flow rate or unbalanced flow in the valve.
The solution is to adjust the flow rate, or install a muffler or flow balancer at the inlet or outlet of the valve to alleviate vibration.
5. The valve can not be closed: This failure is often due to the damage of the valve operating mechanism or the valve stem and valve body clearance is too large caused.
The solution is to check and replace the operating mechanism, or adjust the stem and valve body clearance.
6. The valve can not be opened: This failure is often due to the damage of the valve operating mechanism or the valve stem and valve body clearance is too small caused by.
The solution is to check and replace the operating mechanism, or adjust the stem and valve body clearance.
7. The interface size of the valve does not match: This fault is often caused by the mismatch between the interface size of the valve and the interface size of the pipeline.
The solution is to check the interface size of the valve and the pipeline, and adjust or replace the valve.
Valves are important fluid control equipment, and daily maintenance can ensure their normal operation and extend their service life. Generally, daily maintenance of valves should include the following aspects:
1. Clean the valve: Regularly clean the appearance of the valve, as well as the inlet and outlet of the valve to prevent debris from clogging the valve.
2. Check the valve seal: Check the valve seal regularly to see if it is intact. If it is damaged, replace it in time.
3. Lubricate the valve: Lubricate the moving parts of the valve regularly to ensure the normal operation of the valve.
4. Check the valve control device: Check the valve control device regularly to ensure that it can accurately control the opening and closing of the valve.
5. Check the valve connector: Check the valve connector regularly to ensure that it is well connected to prevent air leakage or leakage.
