The media controlled by the valve, intake valve through the opening (part 2 in the picture above). The media should at the start (9), solenoid valve before continuing to flow into the outlet (3). The diaphragm is opened and closed by the plunger (7).solenoid hydraulic valve

 The valve shown above a valve normally closed. NC valves use a spring (8),Air treatment units push the end of the piston at the beginning of the exposure. The sealant on top of the piston to hold the media to the opening created by the plunger of an electromagnetic field of the coil increases.

The animation shows how a direct consequence of the solenoid.