The plug valve is a valve used to cut off, distribute and change the flow direction of the medium. It is characterized by a simple structure and fast switching. In order to ensure its long service life and good performance, the following are the maintenance and operation suggestions for the plug valve in use:
### In daily inspection and maintenance:
1. Check the sealing performance: Check the sealing performance of the plug valve regularly. If leakage is found, the seal should be replaced or adjusted in time.
2. Observe the operating status: Ensure that the plug valve switches flexibly without jamming.
3. Check the fasteners: Check the bolts and nuts of the connecting parts of the plug valve regularly to avoid loosening due to vibration.
### Lubrication and maintenance of plug valves:
1. Regular lubrication: For plug valves that need lubrication, inject an appropriate amount of grease into the lubrication hole during operation or regularly to reduce friction and extend service life.
2. Select appropriate lubricants: Select appropriate grease according to the medium type and working conditions to avoid chemical reactions between the lubricant and the medium.
### Cleaning and protection of plug valves:
1. Remove impurities: Regularly clean the sediment inside the plug valve to prevent impurities in the medium from affecting the normal operation of the valve.
2. Keep the appearance clean: Prevent dust and corrosive substances from accumulating on the valve body, especially for plug valves installed outdoors.
### Regularly replace wearing parts:
1. Replace seals: The seals of plug valves are easy to wear and should be replaced regularly according to the frequency of use and working conditions.
2. Valve stem maintenance: If the valve stem is found to be severely worn, it should be repaired or replaced in time.
### Precautions for switch operation:
1. Open and close gently: Avoid excessive force to damage the valve stem or seal.
2. Appropriate operation frequency: When not in use for a long time, the plug valve should be operated regularly to prevent rust or jamming.
### Storage and standby maintenance:
1. Storage conditions: Uninstalled plug valves should be stored in a dry and ventilated environment to avoid contact with corrosive substances.
2. Protect the sealing surface: The sealing surface of the plug valve should be protected during storage to prevent scratches or contamination.
In summary, through the above maintenance operations, the service life of the plug valve can be effectively extended, the failure rate can be reduced, and its stable operation in working conditions can be ensured. If the equipment is used in high frequency or harsh environment, the maintenance frequency and intensity should be increased.