| 摘要 |
The diaphragm regulator controls fluid pressure in downstream piping. The regulator may also be used as an on/off valve, although this is not its primary application. A central circular housing in the body of the regulator receives a removable flow diffuser to reduce turbulence when fluid is flowing from the inlet port to the outlet port of the regulator. The flow diffuser has a flat circular base with an inlet zone in the center and a plurality of vanes extending from the inlet zone to the outer circumference of the base. These vanes are spaced apart and define a plurality of flow passageways permitting fluid to flow from the inlet port, through the inlet zone, through the passageways, through the transition zone and exit the outlet port. Each vane has a flat upper surface parallel with the base and an inclined surface sloping downward from the flat upper surface to the inlet zone. When the regulator is in the closed position, the diaphragm contacts the inclined surfaces of the vanes and engages a seat at the base of the flow diffuser. The angle of the inclined surface is complimentary to the angle of the diaphragm when it is contacting the seat. In an alternative embodiment, the flow diffuser has a recess that receives a flow restriction element.
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