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Fluid Flow Control Animations
Fluid Flow Control Animations

Calculating BASE FREQUENCY in Hertz.

1. In order to find the right damper you 1st need to find your base Frequency in Hz.
Take note:Calculate - rpm / 60 x Number of displacers = Base Frequency in Hz. "Hertz"

Right your answer down.keep track of your answer

2. GO ON to calculate your Fluctuation GO TOgo on to fluctuation



1 = simplex

(Single piston or plunger - may also be pushing oil to move a diaphragm)
2 = duplex (Two plungers etc. - the flow will still come to a halt as one changes over to another)
4 = triplex (Three, now there will be continuous flow, provided the volumetric efficiency is high enough)
6.5 = quadraplex (Four, sounds better. But the problem is that such a low & even number maximizes the chances of resonance, so flow through interception becomes a necessity)
9 = quintuplex (5, Good - overlap even at low volumetric efficiencies)
18 = septuplex (7, Also good, BUT now the number of pulses per second is becoming high. High frequencies may easily match the high frequency of short pipe nodes. If this occurs what ever level of residual forcing pulsation you go down to, the system stands a good chance of amplifying the residual pulsation to a high level.

Return to the Pumps Menu to the pumps menu
Return to the beginning of PulseGuard, pulsation dampeners

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.

Fluid Flow Control Fluid-Flow-Control.com The Fluid Flow Control Source Pumps Accumulators Filters Dampers Heat Exchangers Valves Mixers P.I. / Pressure Indicators Controls Meters Vessels
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