Patent ID: 6340029
Filing Date: 2002-01-22
Classification: F16K,Y10T

Abstract:
A method for opening/closing a valve, comprising the steps of:providing a valve body, a rotating member disposed within said valve body, a first actuator coupled to said rotating member through said valve body and rotating said rotating member to close and open said valve, a seat member disposed adjacent to said rotating member, and a second actuator communicated with said seat member to move said seat member toward and away from said rotating member; rotating said rotating member in a first direction for opening said valve; rotating said rotating member in a second direction for closing said valve; moving said seat member to be contacted with said rotating member closing said valve; providing a plurality of magnetic members mounted on both sides of said seat member and a side of said valve body facing said side of said seat member; and moving said seat member so that a first polarity and a second polarity of said magnetic members are located to face each other.