PulseGuard
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
The COST $$ of VANE PUMPS
with Various PULSEGUARD Dampers

Quieting pipe noise in Vane Pump systems
Most efficient, lowest cost, "Pulse" Muffler method selection.
Vane pump

GO TO General/Prices/Installation/etc. Pages Vane Pumps with Pulsation Dampers

FLEXFLON WAS NOT NECESSARY
Liquids with enough lubricate, to use with vane pumps, infrequency need the chemical resistance of Flexflon, PTFE, or EIDP Teflon. Virgin Teflon is "dead" and unresponsive. Stiff and rarely deflects above 30Hz. The poor response characteristics, make it necessary to greatly over size the diaphragm. Oversizing provided so much liquid that on its own, it does half the job. Although the Flexorber LP does more work as a volumetric damper than a 5 litre accumulator it is a waste of money in this application.

Sog/TW/100i/1600p
1.3 Litres
110 Bar
all 316 & TFE
1" x 0.75"
3. $2,110

GOOD FOR VOLUMETRIC FLUCTUATIONS
Ideal for response up to 60Hz., and directing the spikes at the inside of the bladder, make 600% most cost effective than, for example, a PipeGuard, - PipeHugger still leaves a lot of noise in the system; though it does isolate pipe resonance from amplifying the pump signal.
PHr/122 in3/1,050 psi
316L wetted & Dupont Viton
2. $1,365
THE PROBLEM IS HIGH FREQUENCY PRESSURE PULSATION, "ACOUSTIC" NOT FLOW FLUCTUATION
WaveGuard can completely eliminate audible evidence of the 223 Hz. Frequency, for less than 40% of the cost of treating it as a flow fluctuation.
Wag/1.2e/1,800p/
1. $774

The worst and most inexcusable error in pipe system design is to treat pressure transfer as the same as rate of mass transfer, & assume that liquid is incompressible. (or that speed of sound = infinity)

Because flow is so slow, there is time to flow up, come to a stop, and flow back down a "T" on the other hand, whatever the residual pressure pulsation level is, it will fly straight past a "T".

Mass of liquid in a pipe is transferred at not above 180 inches/sec or say 460 cm/sec

Pressure is 300 times faster than flow!


Pressure in a fluid travels at, Mach 1 (in Air)
In harder substances (liquid) is transferred at up to 4000 MPH, or say 140,000 cm/sec.

CONCLUSION:- With 300% greater efficiency, because flow fluctuations & pressure pulsation are forced to see the inside of PULSEGUARD PULSE DAMPERS, are more compact vessels and DO MORE WORK FOR A LOWER COST
hence the saying:-

Dampers that do, flow goes through, BUT pressure pulsation is caught

DON'T FORGET! This takes you straight back to the beginning -- don't use back, back, back Explorer button.

Return to the top
Vane Pumps with all dampers
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