PulseGuard Pulsation Dampers
PulseGuard: Guarding Against Pulsation
Pump Pulsation Dampers
Fluid Flow Control Animations

Pulsation Damper Information PDF PDF PG54 FLo Pulsation Damper Application Story

Pulsation Dampers - Double Layer, Sandwich, 2 sheet PTFE Diaphragm Metering Pump

that have secondary containment sealing, and hazard alert port option to between the layers.

Contary to manufacturers recommendations the pump performes well for years running at near twice the stroke rate - twice the flow rate filtered with FLEXORBER-LP suction damper (A) and FLEXORBER-HP (B) discharge damper.
Although the (A)(B) are 15 times larger volume than the pump head, and very similiar in construction, they cost LESS THAN A PUMPHEAD.

Pulsation Damper on a Metering Pump

A COMMON PROBLEM with diaphragm heads
Warm liquids, and liquids with low SG and low cP ARE compressible. The liquid in the pump head has to expand down from system discharge pressure, as does the diaphragm drive fluid, until both, about 8x the stroke volume, have reached near atmospheric pressure, before the suction check valve can even begin to open. Damping these pumps requires a pressure shock wave interceptor.

Do they tell you to use a packed plunger pump if possible?
The expansion process with diaphragm head pumps uses up to 40% of suction stroke before the pump can start to fill. In that lost time the pump plunger has accelerated to near 3 or more times its average speed. Therefore when the check valve does open, the suction system has to jump from zero velocity up to three times the mean velocity on soft liquids.


FlexOrber Low and High Pressure Pulsation Dampers
This is called "Velocity Jump from low volumetric efficiency". Low efficiency from compressibles, causes massive & instant pressure fall producing negative pressure waves - negative shock.
A negative pressure wave - shock - travels back up the supply system - at about 3000 miles per hour. They break the liquid column into slugs of liquid spaced with air and gas pockets.
Now the supply line feeds the pump intermittently, liquid gas liquid gas bubbles, "slush".
The pump efficiency falls further, has no chance to maintain any metering accuracy. Keep it simple, use plunger pumps, & simple dampers.
After compressing and compressing the liquid, the velocity jump results in shock from jerking the mass from zero up to 3 times normal velocity, plus instantaneous decompression into the system. Shocks traveling faster than a bullet. The shocks may also amplify by resonation cracking the pipe.

Shocks can not bypass - the Pulsation Damper with PTFE Diaphragm - FlexOrberdamper range FLO, & FL-LP for suction

1). Immediate return to the pump vendors 1% metering accuracy and often better.
2). Higher flow rates. The pump can now run 50% faster & transfer far more liquid.
3). Instruments and control systems function, and the pipe system stops fracturing.


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 Pulsation Damper Distributors
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PulseGuard Pulsation Dampers
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Pulsation Dampers | Pulse Damper Drawings
PulseGuard Pump Pulsation Dampers PulseGuard Pulsation Dampers PulseGuard Ltd. Pulsation Dampers Dampners from stock, for United Kingdom - Europe - and Asia
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