The role of the solenoid valve

- Sep 29, 2019-

With the continuous advancement of technology, solenoid valve technology combined with control technology, computer technology, and electronic technology has been able to perform a variety of complex controls. For example, the solenoid valve can be applied in the field of intelligent control and applied in wireless control technology. Because the solenoid valve can be controlled by electromagnetic, it can interface well with various electronic systems, which is one of the main reasons for its wide application.

The role of the solenoid valve

Solenoid valve: Switch control for liquid and gas lines, is two DO control. Generally used for the control of small pipes.

It can only be used as a switch, it is a DO control, it can only be used for small pipe control. It is common in DN50 and below pipes, and it is rare.

1. Switch form: The solenoid valve is driven by the coil and can only be turned on or off. The switching time is short.

2. Nature of work: Solenoid valves generally have a small flow coefficient and a small difference in working pressure. For example, a general 25-caliber solenoid valve has a smaller flow coefficient than a 15-caliber electric ball valve. The solenoid valve is driven by an electromagnetic coil and is relatively easily damaged by voltage surges. Equivalent to the role of the switch, is the role of opening and closing. The solenoid valve can be reset by general power failure, and the electric valve needs to be reset by such a function.

3. Applicable process: Solenoid valve is suitable for some special process requirements, such as leakage, special fluid medium, etc., which is more expensive.


In the quantitative refueling, due to the existence of “overshoot”, the actual refueling amount is greater than the refueling amount displayed on the display screen, and the addition of the solenoid valve can eliminate the overshoot and improve the accuracy of the quantitative refueling.

The solenoid valve uses electromagnetic energy to flow through the coil to generate electromagnetic attraction to attract the valve core (overcoming the spring or self-gravity). It is divided into two types: normally open and normally closed. It is usually used to cut off the circulation of oil, water and gas. With the pressure, temperature sensors and other electrical equipment to achieve automatic control.

Solenoid valves are widely used, not only in pneumatic systems, but also in hydraulic systems, hydraulic systems, and in food, medicine, electronics, and more. When we use it, it is best to first understand the principle and function of the solenoid valve, so that it can achieve good results.