What are the common faults that can affect the use of electric butterfly valves

Electric butterfly valve is a common control valve, widely used in various industrial fields of fluid control and regulation. However, due to the complex use environment and long time operation and other reasons, the electric butterfly valve may have various failures during use. The following lists some common faults and the reasons that may affect the normal use of electric butterfly valves.

1 motor failure: The electric butterfly valve uses an electric actuator to control the opening and closing of the valve. If the motor in the electric actuator fails, such as coil short circuit, bearing damage or poor contact of the power line, it will cause the electric butterfly valve to not work properly.

2. Valve body leakage: The valve body of the electric butterfly valve is a component that bears fluid pressure, and if the valve body is poorly sealed or there are cracks, it will lead to valve body leakage. Possible causes include improper installation, aging materials, and damaged seals.

3. Valve shaft stuck: The valve shaft is a key component of the electric butterfly valve. If the valve shaft is stuck because of poor lubrication or blockage, it will cause the valve to fail to open and close normally.

4. Control system failure: The control system of the electric butterfly valve includes sensors, controllers and actuators. If the sensor in the control system fails, the controller is damaged or the actuator is interfered with, it will affect the control and operation of the valve.

5. Thermal expansion and contraction caused by temperature changes: the use of electric butterfly valves in high or low temperature environments may cause component deformation or damage due to the thermal expansion and contraction of materials, resulting in the valve not being able to open and close normally.

6. Corrosion and wear: Long-term use or affected by corrosive media, the components of the electric butterfly valve may be corroded and worn, resulting in poor valve operation or reduced sealing performance.

7. Poor lubrication: The rotating parts of the electric butterfly valve need to maintain good lubrication, if the lubricating oil is insufficient or contaminated, it will affect the flexibility and stability of the valve.