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Working Principle of Electromagnetic Directional Control Valves;

1. Switching Mode: Electromagnetic valves are coil-driven and can only be fully open or fully closed, with short actuation times during switching.

Electric valves are typically driven by motors, requiring a certain amount of time to complete opening or closing actions. They can be used for analog control and are suitable for regulation.

2. Operational Characteristics: Solenoid valves typically feature very low flow coefficients and operate under minimal pressure differentials. For instance, a standard 25mm solenoid valve has a significantly lower flow coefficient than a 15mm electric ball valve. Driven by electromagnetic coils, solenoid valves are susceptible to voltage surges. Functioning as switches, they perform only two actions: open and close.

Electric valves are typically driven by motors and are more resistant to voltage surges. Solenoid valves are designed for rapid opening and closing, commonly used in applications requiring small flow rates, low pressures, and high switching frequencies. Electric valves offer precise flow control with multiple states (open, closed, partially open/closed), enabling regulation of medium flow within pipelines—a capability beyond the scope of solenoid valves.

Solenoid valves typically reset automatically upon power loss. Electric valves require additional reset mechanisms to achieve this functionality.