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
with Various PULSEGUARD Dampers

Curing resonant pipe "whine" in vane pump systems.
Vane pump

Recommended Comparisons, To Costs of Vane Pumps with Pulsation Dampers

At (1)
Low frequency (2) Medium frequencies (3) High frequencies
If you must have the high cost of a single connection "damper" than at least
GO TO the original PIPEGUARD series, it is far less expensive than any of its copies.

The source of the disturbances, that is magnified into audible pulsation by the pipe system is from "X".
vane pump detail
As the vane passes over the end of the port slot, there is a pressure peak from the liquid trying to escape.

(2) & (1) * The PIPEHUGGER
For up to 150 Hz.
Pt. Nbr. PHr/TW/--

For medium frequencies and with EPDM, Buna/Nitrile, Hypalon, or fluoro elastomer etc. bladders.
See FLEXORBER for Flexflon & PTFE.

vane pump with HP PipeHugger
Piping:- "Louisiana style"
"One out or it, and one coming at you."

The higher the frequency , the less important the volume of Nitrogen or air cushion becomes.
Conversely, the more important it is that:-
A). There is a a good volume of liquid to deaden the pressure activity.
B). There is nothing close to the inlet, for a transient pressure spike to bounce back from.
C). As a pressure spike explodes through an orifice into a large chamber, it dies away exponentially with distance traveled, so the diameter of the vessel is of prime importance, and should be preferable 8+ times the diameter of the exit hole.

* * For all the above reasons, our original 1965 gas bag accumulator, The PipeGuard, copied by so many, is totally unsuitable in its single connection form. * *

(1) For systems requiring cleanliness, "LDi" Flexflon, PTFE, or EIDP Teflon,
Plus polished 316ss and flow through flushability in place. GO TO

Vane pump with a Flexorber LP

Unlike "Volumetric flow fluctuation" accumulation, or protection from "acceleration head loss or acceleration head generation" on the discharge of a reciprocating machine, preventing the pressure response of a system from feeding back to a pump and amplifying the input signal, requires the interception of pressure waves. Pressure travels at thousand of MPH, so an in line flow through device is a bare minimum requirement.

Pulsation dampers with no moving parts, and no foam to degrade or clog.
"Maintenance free dampers" An admission that pulsation is acoustic not volumetric.
(3), (2) & (1) * WAVEGUARD
For high, medium & low frequency pressure pulsation.
Pt. Nbr. Wag/Cer/--
wave pump with a WAVEGUARD
The answer, to high frequency low volumetric pulsation, for clean liquids.
Note: A dominant frequency of say 300 Hz, may mean nothing more than, that there is a major pipe node that is 15 ft. long. IE Frequency depends on distance.
Please the other WAVEGUARD ranges types designed for contaminated systems.
For high efficiency "acoustic" dampers where some delta P is acceptable, please refer to Wag/HO/--series.
For high efficiency "acoustic" dampers where some delta P is acceptable, please refer to Wag/HO -- series.

The WAVEGUARD Ball path Disperser
Guards against pressure wave propagation

By causing the pressure waves to travel down many paths of different lengths, through the ball pack, the instant at which they emerge from the other end of the WAVEGUARD, is spread over time.
Spreading the time base, decreases the pressure height of the pulsation.
WaveGuard Cer
* * * How many one connection silencer mufflers, filters, capacitors, have you seen?

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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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