Patent ID: 6394415
Filing Date: 2002-05-28
Classification: F16K,Y10T

Abstract:
A fluid control valve which controls a fluid moving through a valve body by means of opening and closing a portion between a valve seat and a valve holder; said fluid control valve comprising:a drive unit having a valve rod, a rod shaped nonmagnetic shaft for applying pressure to said valve seat via said valve rod, and a member â€œaâ€  which is affixed around said rod shaped shaft; said member â€œaâ€  formed of a magnetic material; a single coil having a space between it and said shaft, said member â€œaâ€  provided at a position parallel to said shaft moving upwardly by electromagnetic induction whereby the portion between the valve seat and the valve holder is opened; a spring operatively connected to said shaft, said spring moving said shaft downwardly, whereby the portion between the valve seat and the valve holder is closed, wherein opening the portion between the valve seat and valve holder is accomplished by electromagnetic induction and closing the portion between the valve seat and valve holder is accomplished by said spring; and a means is provided for adjusting a gap G between said coil and said member â€œaâ€ .