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Solenoid valves

Solenoid valves

In the simplest case, solenoid valves use the force of a magnetic field to switch between to basic states: NO (normally open) and NC (normally closed). The control of the valves is performed by means of the electric current from the solenoid. From it, the magnetic field with triggers the actual switching action is generated. In general, they classified as puppet, pilot-operated, and force-operated. Puppet solenoid valves function at 0 bar or higher. The switching action requires neither a minimum operational pressure nor a pressure differential. Pilot-operated solenoid valves open and close the valve seat by means of the pressure applied by the medium. Force-operated solenoid valves combine the two activation methods above. They are equipped with a mechanical connection between the magnetic anchor and the diaphragm supporting movement.