| 摘要 |
A valve construction in which the flow transition region extending from a valve port to the end of the valve body comprises a diffuser section diverging to give cross-sectional area change equivalent to that produced in a cone with an included cone angle of from 6 DEG to less than 20 DEG from the port to a location at or near the end of the body where it terminates in an abrupt discontinuous section which enlarges the flow transition region substantially to the flow area of the conduit to which the valve is connected.
|
