Patent ID: 8851448
Filing Date: 2014-10-07
Classification: F16K

Abstract:
1. A motor-operated valve comprising: a body having a seat formed therein; a bush fixed to the body and having an internal thread formed inside; a driver having an external thread which is in mesh with the internal thread of the bush; a valve element arranged to abut on or come close to the seat when pressed by the driver; a can firmly fixed to the body; a rotor disposed pivotably inside the can and of which the rotation is transmitted to the valve element via the driver; a stator disposed on the outer circumference of the can; and a coil spring means for forcing the valve element toward the rotor, at least a part of the coil spring means being disposed so as to surround an outer circumference or outer periphery of the bush; and a spring case disposed in contact with the outer circumference or outer periphery of a small-diameter portion of the bush.