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Do you know the difference between electric valve and solenoid valve?

Views: 288     Author: Site Editor     Publish Time: 2021-07-26      Origin: Site

Solenoid valve is a type of electric valve. It uses the magnetic field generated by the solenoid coil to pull the valve core to change the switch of the valve body. When the coil is de-energized, the valve core retreats by the pressure of the spring. Simply put, the electric valve is to control the valve with an electric actuator to realize the opening and closing of the valve. It can be divided into upper and lower parts, the upper part is the electric actuator, and the lower part is the valve. What are their specific differences? Let us find the answer below.


57-1 large valves


The working nature of electric valve and solenoid valve

Solenoid ball valves generally have a small flow coefficient and a small difference in working pressure. The solenoid valve is driven by the solenoid coil, which is easily damaged by voltage shock. It is equivalent to the function of a switch, which is two functions of on and off.


Electric actuated valves are generally driven by motors, which are relatively resistant to voltage shocks. Solenoid valves are quick-opening and quick-closing, and are generally used for small flow and small pressure. The opening of the electric valve can control the flow of the medium in the pipeline, but the solenoid valve cannot meet this requirement.



The use and difference of electric valve and solenoid valve

The solenoid valve uses the electromagnetic principle and uses the electromagnetic attraction generated by the energized solenoid to guide the movement of the valve core. The control mode is DO digital signal control.


The driving device of the electric actuated ball valve is a reversible electric motor, which drives the valve core to control the valve by rotating the motor for a certain period. It adopts AI analog signal control, which can adjust the flow of pipeline medium, and can also use digital signal control in specific pipeline environment.



Differences in the scope of application of electric valves and solenoid valves

Solenoid motor operated valve has excellent anti-leakage performance, rapid opening and closing, low power, suitable for cutting off and shutting off some corrosive and toxic chemical pipelines.


Electric valves are mostly used for pipeline flow adjustment. They are normally installed at the outlet of air supply and refrigeration pipelines. They can also be used in liquid pipelines. They are widely used in pipelines such as canned pipelines for beverage production and sewage treatment pipelines.


57-2 air valves


Differences in the use of electric valves and solenoid valves

Solenoid valve: used for on-off control of liquid and gas pipelines, two-position DO control. Generally used for the control of small pipelines. It can only be used as a switch value. It is DO control and can only be used for small pipeline control. It is common in DN50 and below pipelines.


Electric valve: It is used to adjust the analog quantity of the pipe medium flow of liquid, gas and wind system, which is AI control. In the control of large valves and wind systems, electric valves can also be used for two-position switch control. Electric valves can have AI feedback signals and can be controlled by DO or AO, which are more common in large pipelines and air valves.



What else do you want to know about valves?

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