Excavator solenoid valve 20Y-60-32121 for PC200-7 construction machinery accessories

Solenoid valve structure principle

       1, The external leakage is blocked, the internal leakage is easy to control, and the use is safe

Internal and external leakage is an element that endangers safety. Other automatic control valves usually extend the stem, and the rotation or movement of the spool is controlled by an electric, pneumatic, and hydraulic actuator. It is necessary to solve the external leakage problem of long-term action valve stem dynamic seal; Only the solenoid valve is the completion of the iron core sealed in the magnetic insulation tube of the electric control valve, and there is no dynamic seal, so the external leakage is easy to block. Electric valve torque control is not easy, easy to produce internal leakage, and even pull the stem head; The structure of the solenoid valve is easy to control the internal leakage until it is reduced to zero. Therefore, the solenoid valve is particularly safe to use, especially for corrosive, toxic or high and low temperature media.

        2. A variety of models, wide range of uses

Although the solenoid valve has congenital shortcomings, the advantages are still very prominent, so it is designed into a variety of products to meet a variety of different needs, and is extremely widely used. The progress of solenoid valve technology is also centered on how to overcome congenital deficiencies and how to better play the inherent advantages.