FLOW RATE CONTROL VALVE AND ASSEMBLY METHOD THEREFOR

摘要

In relation to a flow rate control valve and an assembly method therefor, first and second ports (12, 14) are connected respectively to a body (16) constituting the flow rate control valve (10). A valve mechanism (18) capable of controlling the flow rate of a pressure fluid is disposed in a central portion of the body (16). The valve mechanism (18) is equipped with a valve holder (50), which is press-fitted into a second cylindrical section (24) of the body (16). A needle valve (54) is screw-engaged for advancement and retraction in the interior of the valve holder (50), and a seat ring (52), which is formed by press molding, is press-fitted onto a lower portion of the valve holder (50) and connected coaxially therewith.