| 摘要 |
A diaphragm control valve includes a diaphragm valve member having an outer peripheral section for securing the diaphragm within the valve housing, a valve-closer section displaceable with respect to the valve seat for controlling the flow, an intermediate flexible section permitting the displacement of the valve-closer section, and a cylindrical guiding section between the valve-closer section and the intermediate flexible section. The housing includes a cylindrical guiding surface engageable with the cylindrical guiding section of the diaphragm and with the valve-closer section for guiding the movement of the valve-closer section.
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