External leakage is blocked, internal leakage is easy to control, and it is safe to use

External leakage is blocked, internal leakage is easy to control, and it is safe to use.
Internal and external leaks are a safety hazard. Other automatic control valves usually extend the valve stem, and the rotation or movement of the valve core is controlled by electric, pneumatic, or hydraulic actuators. This must solve the problem of external leakage of the dynamic seal of the valve stem during long-term operation; only the solenoid valve uses electromagnetic force to act on the iron core sealed in the magnetic isolation sleeve of the electric regulating valve. There is no dynamic seal, so the external leakage is easy to be blocked. . It is difficult to control the torque of electric valves, and it is easy to cause internal leakage, and even break the valve stem head; the structure of the solenoid valve makes it easy to control internal leakage until it drops to zero. Therefore, solenoid valves are particularly safe to use, especially suitable for corrosive, toxic or high and low temperature media.