To provide a flow control valve high-precisely controlling a flow rate and capable of being decreased in size and a flow control valve device using the device.

A current to a coupling part 105a flows to a coupling part 105b through a lower conductor 104a, a core 104b, and an upper conductor 104c. In this case, a magnetic dipole moment m is generated in a direction, extending vertically to the axis of the core 104b by a current flowing to a coil 104 spirally in a counterclockwise direction. When magnetic flux density B by a pair of permanent magnets is generated in the direction of a support part 120, torque of m×B is generated through an interaction between a magnetic dipole moment and a magnetic flux density. Since one side of a flap 102 formed at the coil 104 is fixed by elastic flexible elements 103a and 103b, an opening 110 is released with movement of the flap 102 in an upper direction. Displacement of the flap 102 is changed by the intensity of a current applied to the coil 104.