PulseGuard Pulsation Dampeners

Fluid Flow Control Animations
PulseGuard Pulsation Dampeners
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Vane Pump Pulsation Dampener Standard Installations

How to ensure lowest in place cost and most performance by standard installation methods. Curing resonant pipe "whine" in vane pump systems. At: 1. Low frequency 2. Medium frequencies 3. High frequencies


Vane Pump


Pulsation Dampener site - arrow Click Here for pulsation dampeners for vane pumps listed by dimensions and connection size


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

FlexOrber: for systems requiring cleanliness, LDi “FlexFlon” or DuPont Teflon, plus polished 316ss and flow through flushability in place. Piping: “Texas style” – longhorns. A quieter pump would have 7 or 11 vanes. PTFE diaphragms are “stiff” and generally only respond up to a maximum frequency of 30Hz. Check your pulse frequency before selecting Teflon.
PipeHugger: for up to 150Hz. For medium frequencies and with EPDM, Buna Nitrile, Hypalon, or Fluoro elastomers, etc. bladders. Piping: “Louisiana style” – one out of it and one coming at you.
The higher the frequency, the less important the volume of Nitrogen or air cushion becomes. Conversely, the most important it is that:-
A). There is 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 preferably 8+ times the diameter of the exit hole.
For all the above reasons, our original 1965 gas bag accumulator, PipeGuard, copied by so many, is totally unsuitable in its single connection form. * * *
Pulsation dampeners with no moving parts, and no foam to degrade or clog. "Maintenance free pulsation dampeners " An admission that pulsation is acoustic not volumetric.
For high efficiency “acoustic” pulsation dampeners where some delta P is acceptable, please refer to Wag/HO series.WaveGuard pulsation dampeners: for high, medium, and low frequency pressure pulsation. The answer to high frequency low volumetric pulsation, for clean liquids.A dominant frequency of say 300 Hz, may mean nothing more than, that there is a major pipe node that is 15ft. Long, i.e. Frequency depends on distance. Please see the other WaveGuard range types designed for contaminated systems.
PulseGuard pressure pulsation dampeners
The WaveGuard Ball path Disperser Guards against pressure waves 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.

* * * How many one connection silencer mufflers, filters, capacitors, have you seen?
If you must have the higher cost of a single connection “pulsation dampener” then at least go to the original PipeGuard series, it is far less expensive than any of its copies.
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 thousands of MPH, so an in line flow through device is
a bare minimum requirement.

PulseGuard Pulsation Dampeners
Dampeners that do, flow goes through but pressure pulsation does not.

PulseGuard pulsation dampeners are designed to address pressure pulsation, which is caused by the resistance of the system to flow. Therefore our dampeners focus on the system related responsibility and are less related to pump liability.

 



Fluid Flow Control Pulsation Dampeners