PulseGuard Ltd. and Inc.
PulseGuard Ltd. offers pulsation dampers | Please phone 44(0) 161-480-9625
We have people not voicemail | Call toll free UK 08080-567-7423
Fluid Flow Control Animations
Fluid Flow Control Animations

pump parts action
(Write this 12% down for your use in your size calculation).

Ancient pumps had large and heavy moving parts; the weight of these parts acted as a flywheel and evened out the driving power fluctuations. Today with lighter more compact and lower cost machines, there is less "flywheel effect". For example a good ammeter can detect more than a 50% electric power fluctuation between the suction and the discharge stroke of a duplex pump, despite the flywheel effect of the motor itself. If the torque of the pump shaft is measured, the torque fluctuation is typically 400% of the average. In other words there must be a large load
or force fluctuation.

The load fluctuations, which cause the power fluctuations mentioned above, cause the drive mechanism, belt, gear, and rods, to suffer huge repetitive stress reversals.
More than three quarters of the stress reversal may be avoided simply by the addition of an
"hydraulic cushion", "accumulator" or "pulse damper" to the piping system.
Reducing the system acceleration "head" pressure change that the piping volume imposes onto your pump, to say a maximum residual of 12% of the theoretical stead state condition, is generally adequate to achieve a tripling of pump fatigue life.


FUN fun way

Find Your Factor for your Pump System
GO TO find your factor for your pump system
PulseGuard Ltd. and Inc. Pulsation Dampeners

Return to the top
Return to the Explanation index
 to explanation index

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