| 摘要 |
<p>A check valve with a mounting ring body defining an orifice and having valving means comprising two pivotal valve members mounted on one face thereof. Each valve member is configured to comprise a segment of a cone which is movable between a closed and an open position over the orifice by the flow of fluid. The strength of the valve members and the flow of fluid therethrough when the valve members are in their open position is maximized by providing the concave inner surface of each valve member with an ellipsoidal segment form. The mounting ring body is also provided with stops against which the valve members abut in their open position for reducing fluttering thereof during fluctuating flow rates and resulting surges in fluid pressure.</p> |
