Patent ID: 6561480
Filing Date: 2003-05-13
Classification: F16K,F25B,Y02B

Abstract:
A motor-operated valve comprising:a rotor having a shaft formed with an external thread and having a lower end and an upper end, a needle valve element having a needle valve head at one end portion thereof, an internal thread engaging with the external thread at another end portion, and a joining portion for joining the valve head to the internal thread, a main valve body having a guide portion which allows an axial movement of the valve element, and a bearing coupled to the main valve body, wherein the lower end of the shaft is disposed within the joining portion, the bearing is coaxially disposed about the joining portion and is coaxially disposed about the guide portion of the valve body that receives the joining portion, the bearing has at least a portion disposed within the joining portion with another portion of the bearing extending externally of the joining portion, and the valve element has a portion thereof engaged with the bearing so as to prevent axial rotation of the valve element.