Control valve routine maintenance
The routine maintenance of the control valve is divided into two parts: tour inspection and regular maintenance. The tour inspection of control valve is as follows.
1. Understand the operation condition of the control valve to the on-duty process operator.
2. Check the power supply (air source, hydraulic oil or power supply) of the control valve and related accessories.
4. Check whether the static and dynamic sealing points of the control valve have leakage.
5. Check whether the connecting pipe and joints of the regulator are loose or corroded.
6. Check whether there is abnormal sound and large vibration of the control valve, and check the supply condition.
7. Check whether the action of the control valve is flexible and whether it changes in time when the control signal changes. .
8. Contact and deal with problems in time.
9. Keep a record of the tour inspection and file it.
 
Regular control valve maintenance is as follows:
1. Regularly clean the outside of the control valve.
2. Regularly adjust the stuffing box of the control valve and other sealing parts, replace the control valve sealing parts when necessary, and maintain the sealing property of static and dynamic sealing points.
3. Regularly add lubricating oil to the parts needing lubrication.
4. Regularly discharge and clean the air source or hydraulic filtration system.
5. Check the connection status and corrosion status of each connection point regularly, and replace the connector if necessary.