To select the speed and size of the hole Orifice plate. Should be used in a value that is appropriate for the job due to the higher speed, making the value of reduced performance. If you use a high speed exceeding will cause a heavy burden by receiving the motor, it is not necessary, as well as increase the size of hole Orifice Plate, rather than if, in a specific range will decrease performance, as seen during the trial. More speed to make up the performance decreased.
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