High-frequency on-off valve

A high-frequency on-off valve comprising:

• an electromagnetic operating section that has an exciting coil wound around a bobbin and a stationary core attached within a center hole of the bobbin;
• a main valve section that is connected to the electromagnetic operating section via a valve chamber and has a plurality of long-hole-shaped output orifices parallel-arranged within the valve chamber, output valve seats surrounding the respective output orifices, an input flow path surrounding the output valve seats and communicating with the valve chamber, an output port communicating with the output orifices, and an input port communicating with the input flow path;
• and
• a plate-shaped valve member that is disposed within the valve chamber such that the valve member is movable into and out of contact with the output valve seats, wherein when electricity is applied to the exciting coil, the valve member is attracted toward the stationary core and moves away from the output valve seats so as to be set at a first position at which the valve member makes the output orifices and the input flow path communicate with each other, and wherein when the electricity is cut off, the valve member is pressed onto the output valve seats due to an effect of a pressure fluid so as to be set at a second position at which the valve member closes the output orifices and blocks the output orifices from the input flow path.