Pulsation-Dampeners.com Index | Selection / Quotation | Contact Information Pulsation Dampeners | Please Phone 910-270-2737 | We have people not voicemail | Call toll free 1-888-326-7377

• Dampener Drawings and Animations
  • Flow Through Flexible Elastomer Tube
  • HP System Liquid in Elastomer Membrane
  • LP System Liquid in Elastomer Membrane
  • Precharge Gas in Elastomer Bladder
  • High Pressure FlexFlon PTFE Diaphragm
  • Low Pressure FlexFlon PTFE Diaphragm
• Pulsation Dampeners
  • PTFE Diaphragm / Teflon Membrane Types
    • AODD Pump Dampeners with Plastomer Diaphragm
    • Diaphragm Metering Pump Dampeners with Plastomer Diaphragm
    • Hose Pump Dampeners with Plastomer Diaphragm
    • Lobe Pump Dampeners with Plastomer Diaphragm
    • Low Pressure Dosing Pump Dampeners with Plastomer Diaphragm
    • Multi Diaphragm Metering Pump Dampeners with Plastomer Diaphragm
    • Packed Plunger Pump Dampeners with Plastomer Diaphragm
    • Progressive Cavity Pump Dampeners with Plastomer Diaphragm
    • Vane Pump Dampeners with Plastomer Diaphragm
  • Elastomer Bladder / Flex-Tube Types
    • Flex-Tube - Acceleration Head and Interception Type
    • Nitrogen Gas in Elastomer Bladder Type
    • System / Process Liquid in Elastomer Bladder Type
  • Acoustic / No Moving Parts Types
    • Frequency Reduction Type
    • Phase Change Type
    • Pulse Dispersal Type
    • Pulse Intensification then Dissipation Type
• Pulse Dampening, Safety, Applications
  • Snubbing, Surge Suppressors, and Shock Absorbing
    • Flow Fluctuation / Suction Systems - Pressure Pulsation / Supply Lines
    • Pressure Pulsation Pulse Signatures
    • Pressure Pulsation Dampeners for Transients and their Interception
    • Pulsation Dampeners for Amplitude of Pressure Wave Spikes
    • Pulsation Dampeners and Pump Vendor Responsibilities
    • Acceleration Head / Pressure that a System Could Create
    • Dampener Flow Smoothness Requirements
  • Pressure Pulsation Dampener Safety
    • Checking Dampener Pressure Rating Safety
    • Checking Required Pulsation Dampener Performance
    • Pre-Filling Dampeners with Nitrogen Cushion Gas
    • Pre-Filling Pulsation Dampeners at Elevated Pressures
    • Pre-Filling Pulsation Dampeners with Pin Core Valves
    • Safe Levels of Pulsation for Preventing Fatigue
    • Dampener Safety and Gas Overload Protection
    • Pulsation Dampener Safety and Liquids
    • Pulsation Dampener Safety and Piping
    • Pre-Filling Pulsation Dampeners with Strut Valves
  • Pulsation Dampener Applications
    • Shock Alleviation / Multi-Head Interaction
    • Double Layer, 2 Sheet PTFE, Diaphragm Metering
    • Flow Fluctuation Smoothing
    • Suction Problems with High Pressure Systems
    • Packed Plunger / Piston Pumps
    • Packed Plunger / Piston Pumps 2
    • Peristaltic and Tube or Hose Pumps
    • Plastic / A.O.D.D. Pump Systems
    • Pressure Pulse Dampening
    • Test and Injection Systems
• Dampeners by Pump

Pulsation Dampeners / System Liquid in Elastomer Bladder Type

PipeHugger Twin Port Low Pressure Pulsation Dampener Series
PipeHugger Twin Port High Pressure Series
Liquid in Elastomer Bladder Dampener Drawings, Cross Sectional Views, Cut Sheets

The principle of operation & features of the "PipeHugger" liquid bladder are :- That a large diameter chamber, relative to the diameter of an entry and exit hole to that chamber, ensures that pressure pulses entering and attempting to pass through such a chamber, die away. The death of pressure waves is relative to a near "cube" law exponent, by distance from entry point to the nearest point for reflection. So that a pressure wave, entering through a small hole, finding itself in a chamber, say 12 times the diameter of the entry hole, will die away to the extent that what is left of the pressure wave, will hardly find its way out of the outlet. "PipeHugger" pulsation dampeners with an elastomeric separator between process liquid and "gas spring", are therefore intrinsically large diameter devices. This has another basic advantage: The bladder, that is the liquid chamber, is large diameter. Large diameter membranes have good response characteristics to changes in pressure that are small. For example and by comparison with small diameter slender gas bags, a PipeHugger bladder may respond to less than a tenth of the pressure change, and also respond at up to ten times the frequency.

THESE CHARACTERISTICS, OF PRESSURE WAVE INTERCEPTION, DISSIPATION, EXCELLENT RESPONSE TO VOLUME CHANGE OVER A WIDE FREQUENCY BAND AT MINIMAL PRESSURE FORCE CHANGE , MAKE LARGE DIAMETER AND FLOW THROUGH - THE VERY "DEFINITION" OF "WHAT A PULSATION DAMPENER SHOULD BE".

PipeHuggers "Close Couple". PipeHuggers may halve the pipe cost

PipeHugger Twin Port Low Pressure Pulsation Dampeners: Series "PeG-TW/"
The large diameter and short configuration of low pressure pipehuggers with stable operation when mounted in any orientation, enables "CLOSE COUPLING". This minimization of the distance between the pulsation dampeners' membrane internals and the pump inlet or check valve, ensures maximum performance by freeing the dampener response from a heavy column of liquid - between pump and dampener. The Pipehugger LP "Peg-TW/--" is often between 3 times and nine times as efficient a dampener, size for size, as the gas bag (bladder balloon) type.

CONCLUSION
Nominal volumes like "A 1 Liter Dampener" or "A 1 Quart Dampener" are an irrelevance. It is for example "The 92% flow smoothing improvement" - plus - "The 98% pressure pulsation interception dampening performance" per Dollar or per Euro, that is relevant.

PROOF OF THE PUDDING
PipeHuggers, are so efficient, and cost effective that they may cost less than nothing. This is simply because without them, a pipe system has to be sized to carry the peak velocities. With PipeHuggers installed, the peak velocities are accumulated, and only the constant velocity remains. So with PipeHugger installed, the size of the pipes will be halved. This saving often exceeds the cost of your PipeHugger, hence your system gets flow smoothing and pressure pulse dampening for free.

PipeHuggers double the Pump Life, or Double the Flow

PipeHugger Twin Port High Pressure Pulsation Dampeners: Series "Phr-TW/" that used to be known as the "PulseTwin". In the days of Bill Mount for LDi in Texas, when men were bold and women didn't wear nighties, - say about 1985, a gentleman had some Milton Roy pumps that Bill had provided back in his day with M.R.. These pumps were suffering, but there was no budget to replace them, so they installed PipeHuggers. These pumps have run as long since as before. So long in fact that the end user has changed its company name more times than the seals.

CONCLUSION
Referring to "One Gallon Dampeners" or "Four Liter Dampeners" is like talking about "One Tonne Steam Engines" - that measure today is break horsepower and torque, not weight. The measure of a dampener today is smoothness per dollar.

PROOF OF THE PUDDING
Taking a tapping into a pump chamber, and the strain on its head boltings, LDi has found that pumps that previously showed a 89% volumetric efficiency at 173 strokes per minute, could be driven at 312 spm, and against the same back pressure, with twice flow. No increase in head bolt strain and less pressure change in the pumping chamber - when fitted with PipeHuggers TW direct onto the suction and discharge check valves.

Clearly one can double the flow from a pump, without increasing its work load, simply by feeding its suction and cushioning its discharge with close coupling.

Dimensional Drawings, Cross Sectional Views, Cut Sheets:

SurgeGuard/JumboFlex/LiquiBello/Floatolator CAD File
SurgeGuard CAD File
Threaded Port PipeHugger with Permacushion CAD File
Twin Ported PipeHugger with Permacushion CAD File
High Pressure Twin Ported PipeHugger CAD File
"Close Coupling" thru-flow installation options CAD File

Pulsation Dampeners with Elastomer Membranes