PulseGuard Ltd. and Inc.
PulseGuard Ltd. offers pulsation dampers | Please phone 44(0) 161-480-9625
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Fluid Flow Control Animations
Fluid Flow Control Animations


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


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sketch plunger with dampers

Click on the picture or below for complimentary Dampers:
PipeGuard PiG-Plas Elastomer Damper For Plastic Pipe Systems
Flexorber LP SoG Low Pressure "Flexflon" Damper

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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.

F = 1.8

A.O.D.D. pump cross sectional view
The F figure assumes that the air supply to the A.O.D.D. is enough to ensure no return stroke delay.
An air operated double end diaphragm pump empties a 40 gals. drum in 4 mins., on a 2 second cycle
10 gals per minute x 231 in3 per gallon / 2 diaphragms per cycle x 30 cycles per min. = 38 in3 per end
@ 1.0 Hz.

Find your % residual fluctuation required figure
from the smoothness shown for each type of application. GO TOforward arrow

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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.
PulseGuard Pulsation DampersThe Smooth Flow People

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

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