Patent ID: 6655651
Filing Date: 2003-12-02
Classification: F16K

Abstract:
A two-port valve comprising:a casing having an input port in a tip end face of said casing and an output port in a side face of said casing at substantially 90Â° from each other; a flow path connecting said input and output ports; an input-side connecting hole connecting said input port to said flow path; an output-side connecting hole connecting said output port to said flow path; an annular valve seat formed around said input-side connecting hole; a valve body configured to open and close said annular valve seat from an inside of said flow path and having a valve sealing portion at a tip end face of the valve body; and a valve shaft connected to said valve body and configured to move forward and rearward in a substantially sealed state in said casing such that said valve body is moved across said output-side connecting hole in opening and closing of said annular valve seat with said valve body; wherein said valve shaft has a diameter equal to a diameter of said valve body, and said valve body opens and closes said valve seat with a stroke which is substantially equal to a diameter of the output-side connecting hole such that said valve sealing portion moves out of said flow path when said output-side connecting hole is fully opened to said flow path, and wherein the annular valve seat and the output-side connecting hole are positioned substantially orthogonal and adjacent to each other.