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

High PRESSURE Gear Pumps, need pulse damping!
When running on viscous liquids, a medium frequency disturbance occurs.

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

Even these, THE SMOOTHEST of all POSITIVE DISPLACEMENT PUMPS have pressure disturbances, which are normally not important, but when they are connected to piping systems that were not designed, will cause pulsation

The source of the disturbance, that is magnified into pulsation by poor, or no pipe design is, from "X"

Pulsation dampers with no moving parts, and no foam to degrade or clog
The answer to, low pressure & low volumetric pulsation with particulate systems.
The WAVEGUARD, Multi Chamber
By exploding pressure peaks through small holes into large chambers pulsation is destroyed.


Go Here to Calculate your VOLUMETRIC & FREQUENCY NEEDS GO HEREforward arrow
APPLICATION STORYMultiplex pump with WaveGuard - WaG GO HEREforward arrow

Click on the picture or below for complimentary Dampers:
WAVEGUARD WaG H.O. No Moving Parts Damper

Need a Hand? Take this Step by Step Process to help you choose your perfect fitting damper Start Hereforward arrow

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 = 5

vane pump cross sectional view
A gear pump has 17 teeth, @ 440 rpm it produces 2 Kg per Second
2 Kg per second x 60 secs per minute x 1000 gms per Kg / 17 teeth per rev x 440 rpm x SG 1.35 = 12 cm3 per tooth
@ 125 Hz.

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