Internal and external leaks pose a threat to security. Other automatic control valves generally extend from the valve stem and control the rotation or movement of the valve core through electro pneumatic and hydraulic drivers. This needs to deal with the leakage of the dynamic seal of the valve stem working for a long time; Rexroth solenoid valve only relies on electromagnetic force to seal the inner iron core on the magnetic circuit breaker sleeve, which has no dynamic seal and is easy to block leakage. Compared with other types of actuators, they are also low cost and easy to install and maintain. The more obvious fact is that self-management systems are always so simple and always so cheap. Rexroth solenoid valve is controlled by switch signal, so it can be easily connected with engineering computer.
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