HOSE PUMPSMake 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

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The Systems Response:

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.

The F figure assumes that the size of the shoe or wheel is approx. one third of the volume between shoes or wheels.

A hose pump squeches out 150 liters of effluent sludge per minute, with 3 shoes revolving 15 times per minute.

150 liter / 3 shoes x 15 revs =3.33liters between shoes@ 0.75 Hz.

Find your % residual fluctuation required figure

from the smoothness shown for each type of application. GO TO

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Selecting Pulsation Dampeners for Different Pump Systems.

Flow through pulsation dampers are at least 3 times more efficient than T off line accumulators.

Dampeners that do, flow goes through, but pressure pulsation does not.

**The Smooth Flow People**

Call Toll Free 1-888-DAMPERS (326-7377) / See also: Pulsation-Dampeners.com for a pulsation dampener.

Flow through pulsation dampers are at least 3 times more efficient than T off line accumulators.

Dampeners that do, flow goes through, but pressure pulsation does not.

Call Toll Free 1-888-DAMPERS (326-7377) / See also: Pulsation-Dampeners.com for a pulsation dampener.