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LOST MOTION PUMP
Make a note of this pump's F number, also known as its Flow Fluctuation Figure. Use the F number with the % residual fluctuation required figure from the smoothness shown for each type of application. These two figures, the F figure and the % figure, applied to the size selection formula give you the smallest practicable damper size.
See below for figures
Click on the picture or below for complimentary Dampers:
F = 0.7
Find the "F" Valve of Your Pump - "F" is a correction Factor on the square of number of displacers.
Example, Centrifugals are intrinsically good - have a high F, Sandwich diaphragm metering pumps have a low F.
Find your % residual fluctuation required figure
from the smoothness shown for each type of application. GO TO
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