Operation Principle

Valve internal Structure

Operation Principle

FIGURE 1: INITIAL/CLOSED STATE OF THE VALVE

Fluid fills all chambers of the solenoid valve. The valve is closed initially.

FIGURE 2: ACTIVATING THE SOLENOID VALVE

Upon activating the solenoid, the pilot piston moves to open the bleed orifice to allow fluid that was inside the pilot piston chamber to escape to the outlet

FIGURE 3: OPEN STATE OF THE SOLENOID VALVE

Due to the pressure difference in the inner chamber and the outlet chamber that overcome the spring force, the solenoid assembly moves to open the fluid outlet.(The orifice of pilot piston open is larger than the inlet small hole).

(The orifice of pilot piston open is larger than the inlet small hole).

FIGURE 4: DEACTIVATING THE SOLENOID

Upon deactivating the solenoid, the pilot piston moves to close the bleed orifice. An equilibrium of fluid pressure is reached causes the spring to push the solenoid assembly to close the flow outlet, the solenoid valve is closed, return to Figure 1

Video of operation