| 摘要 |
<p>A diaphragm control valve comprising: (a) a valve body with an upstream port and a downstream port, and a valve seat formed between the upstream and downstream ports; (b) a plug housing extending from the valve body between the upstream and downstream ports, at least a portion of an interior volume of the plug housing at least partially defining a control chamber; (c) a displaceable valve plug deployed so as to be displaceable between a closed position, in which a sealing portion of the valve plug abuts the valve seat, and an open position, in which the sealing portion of the valve plug is separated from the valve seat; and (e) a flexible diaphragm sealingly attached to the valve plug, the diaphragm sealing the control chamber from at least a portion of the downstream port, the diaphragm configured such that a distance of the valve plug displacement within the plug housing is at least about forty percent of a diameter of the plug housing.</p> |
