Discussion on the installation orientation of flow restriction orifice plates
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A flow control orifice plate usually has one side that is beveled and the other side that is flat. How should it be installed, and what is the correct way to do so? For orifice plates used for throttling, what are the differences in installation depending on whether they are placed with the beveled side facing one way or the other?
This post was last edited by HEJIYUER on 2021-7-22 00:07; see below
This post was last edited by HEJIYUER on 2021-7-22 00:05. The notch is at the back (the acute angle is upstream). The reason for the acute angle being upstream is that the throttling notch causes the fluid to separate rapidly, resulting in a discharge coefficient of around the calculated value (~0.61). Reverse installation results in a higher discharge coefficient.
The direction of the opening groove affects the fluid flow velocity. Simply put, at the same pressure, with a groove present, the flow velocity is higher!
What about orifice plate flow meters? Is the groove also at the back? Is the bevel still at the front to reduce drag?
Hello! Which manual contains an explanation for this diagram?