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
Flow Fluctuation
Flow Fluctuation Smoothing
PLUS Pressure Pulsation Interception
Flow Fluc. Smoothing, Pressure Plstn. Intcp.,
Shock Alleviation
All Preceding 1, 2, 3,
PLUS Preventing Resonant Interaction

On a Typical "A.O.D.D." Pump with Flexflon

A.O.D.D. with LP and HP Flexorbers cut sheet

Simply How it works:

1. Flow rarely goes above 15 MPH/24 KPH. There is time for it to go up a single connection come to a halt, and flow back out again, to keep the liquid moving whilst the pump is changing from one stroke to the next.

2. By smoothing the flow in this way, the pump does not have to generate pressure peaks to accelerated the liquid with each stroke.

3. Flow smoothing reduces the pressure pulsation a pump must create to overcome the resistance that your system has caused.

4. The response of your system to the residual level of flow fluctuation, is usually at a higher frequency, and travels as pressure waves at typically 3500 MPH/5600 KPH.

5. To address pressure wave pulsation, intercept this pressure pulsation with flow-through pulsation dampers. ("See Pressure Pulsation Damping")

This, single connection approach to flow smoothing, requires the use of a "t" piece. This method does not ensure in place flushability for service technician protection. Use of a flow smoother with a single connection, can not guarantee pressure stability, [or at all above 10 Hz] without first having made a system pipework, etc. analysis.

On Typical Diaphragm Metering Pumps

Simply, how it works:

1. Pressure measured at one place in a piping system can be seen approx. 1400 meters away, (o.87 miles away) one second later. That is to say the speed of pressure wave transfer is generally over 3,000 miles per hour.

2. As pressure goes so fast, a piece of pipe, say 15 meters long (approx. 50 ft), reflects it back to source in 0.02 seconds, or say at 50Hz. Another thought is that it will pass a 100 mm "T" branch in 0.00007 of a second! So a one connection damper on the T can not respond.

3. Frequencies from short lengths of system, must be addressed by flow through dampers.*

Diaphragm metering pump with LP and HP Flexorbers color cut sheet
*Flow through, dampers give:
More Flow Fluctuation Smoothing as well, PLUS
A. Pressure pulse interception
B. Flushability in place
C. Standardization
All at a lower cost!

If for some reason you really must not have these benefits, keep the lower cost, by using one connection and the other saves a "T" for Gauge, Drain, R.V., or Rupture Disk.

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Shock Interception
& Resonant Interaction
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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.

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