main feature
1, external leakage plugging, internal leakage easy to control, safe to use.
Internal and external leakage is a factor endangering safety. Other automatic control valves usually extend the valve stem, and electric, pneumatic and hydraulic actuators control the rotation or movement of the valve core. This will solve the external leakage problem of long-term valve stem dynamic seal; Only the solenoid valve is completed by electromagnetic force acting on the iron core sealed in the magnetic isolation sleeve of the electric regulating valve, and there is no dynamic seal, so the external leakage is easily blocked. It is difficult to control the torque of electric valve, which is easy to cause internal leakage and even the head of valve stem is broken. The structure of the solenoid valve can easily control the internal leakage until it is reduced to zero. Therefore, the use of solenoid valves is particularly safe, especially suitable for corrosive, toxic or high and low temperature media.
2, the system is simple, computers can be easily connected, and the price is low.
The solenoid valve itself is simple in structure and low in price, which is easier to install and maintain than other actuators such as regulating valves. What is more noteworthy is that the automatic control system is much simpler and the price is much lower. Because the solenoid valve is controlled by the switch signal, it is very convenient to connect with the industrial computer. In today's era when computers are popular and prices are falling sharply, the advantages of solenoid valves are more obvious.
3, action express, low power, light shape.
The response time of the solenoid valve can be as short as several milliseconds, and even the pilot solenoid valve can be controlled within tens of milliseconds. Because of its own circuit, it is more sensitive than other automatic control valves. Properly designed solenoid valve coil has low power consumption and belongs to energy-saving products. It can also automatically maintain the valve position only by triggering action, and it does not consume electricity at ordinary times. The solenoid valve is small, space-saving, light and beautiful.
4, the adjustment accuracy is limited, and the applicable medium is limited.
Solenoid valves usually have only two switching states, and the valve core can only be in two extreme positions, so the adjustment accuracy is limited.
Solenoid valves require high cleanliness of the medium, and the medium containing particles is not suitable. If it is an impurity, it must be filtered first. In addition, viscous medium is not suitable, and the viscosity range of medium suitable for specific products is relatively narrow.
5, various models, a wide range of uses
Although the solenoid valve has inherent shortcomings, its advantages are still outstanding, so it is designed into a variety of products to meet various needs and has a wide range of uses. The progress of solenoid valve technology is also around how to overcome the congenital deficiency and how to give full play to its inherent advantages.