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|1. (WO2018079586) FLOW RESTRICTOR AND FLOW CONTROL DEVICE IN WHICH SAME IS USED|
|Title:||FLOW RESTRICTOR AND FLOW CONTROL DEVICE IN WHICH SAME IS USED|
Provided is an electric-valve-type flow restrictor that solves the problems associated with manual-valve-type flow restrictors while making sufficient use of the small size thereof. This flow restrictor is provided with a rotation device that vertically moves a vertically moving solid 6 by rotating a rotational solid 15. The rotation device is provided with a driven gear 14 provided to the upper end of the rotational solid 15, and an electric motor 11 that rotates a drive gear 13 meshed with the driven gear 14. The electric motor 11 is a stepping servo motor disposed below the drive gear 13, a rotating shaft 34 of the electric motor 11 extends upward, and the drive gear 13 is fixed to the upper end of the rotating shaft 34.