2/2 directional valves made of brass or stainless steel. directly or servo by means of a diaphragm.
Normally closed (NC), the medium is locked in the basic position by the valve. When the voltage is applied, the valve opens and the valve opens.
In the version Normally open (NO) the valve is open in the basic position. When the voltage is applied, the valve closes.
With large cross-sections, the static pressure is increased, which must be overcome by the magnetic field of the coil. These valves are used to handle higher pressures with large cross sections. The medium supports the switching process for these designs.