| 摘要 |
A valve port adapted for use with a fluid regulating device including a valve body, a control element, and an actuator, the control element being disposed within the valve body and adapted to be displaced between an open position and a closed position for controlling the flow of fluid through the valve body, the actuator being coupled to the valve body and including a diaphragm that is operably coupled to the control element and responsive to a pressure at an outlet of the valve body for moving the control element between the open and closed positions, the valve port adapted to be removably disposed in the throat of the fluid regulating device and comprising a primary valve seat adapted to be engaged by the control element when the control element is in the closed position to prevent the flow of fluid through the valve body. A valve port inlet and a valve port outlet disposed opposite the valve port inlet and an elongated orifice extending between the valve port inlet and the valve port outlet, the elongated orifice comprising a frustoconical portion extending from a location proximate to the valve port inlet to a location proximate to the valve port outlet, thereby enabling fluid to flow through the valve port in a manner that reduces boundary layer separation and maximizes flow capacity. |
