PulseGuard Pulsation-Dampeners.com
Index | Selection / Quotation (What do you need?) | Contact Information

Pulsation Dampeners | Please Phone 910-270-2737 | We have people not voicemail | Call toll free 1-888-326-7377
Fluid Flow Control Animations
Fluid Flow Control Animations

Pulsation Dampeners / Precharge Gas in Elastomer Bladder Type

Bladder type Pulsation Dampener

PipeGuard Slimline Flow Fluctuation Accumulator Series
PipeGuard Twin Port Low Pressure Pulsation Dampener Series
PipeGuard Twin Port High Pressure Pulsation Dampener Series
Gas in Elastomer Bladder Dampener Drawings, Cross Sectional Views, Cut Sheets

The principle of operation & features of the "PipeGuard" gas bag ( bladder "balloon") dual purpose pressure pulsation dampeners and combined acceleration head reducer, ranges are:

1.) For externally corrosive environments, like oil and gas exploration rigs and production platforms where the body externals need to be from stainless steel, corrosive liquids can be housed inside the body shell and outside a resiliently deformable gas filled bag ("bladder"). (Instead of the liquid being in a bladder, and thereby away from a normal steel "drive end", aka "compressible gas bonnet". [see PipeHugger type I b. below] ).

2.) As stainless steel is expensive, economy is necessary. This is achieved by having volume from length, at relatively small diameter. From this comes Length to Diameter ratios from 2:1 to 3,5:1

3.) These L:D ratios then require "long slender gas bag ( bladder "balloons"), These gas bag ( bladder "balloons") are designed so that they expand progressively, expelling liquid from outside of themselves, starting at their static end and expanding progressively towards their movable ends. Their movable ends being adjacent to where the liquid flows out and in. This progressive expansion of the pulsation dampeners' gas bag ( bladder "balloon"), prevents liquid volume being trapped within the long shell housing. The progressive expansion is achieved by designing a tapered gas bag ( bladder "balloon") that also has a tapered wall thickness. The sweeping action of these gas bag (bladder) is similar to that of a piston accumulator accepting and expelling liquid.

4.) The Gas bag (bladder) are molded as one piece, Our gas bag (bladder) are not Glued together. Our Gas bag (bladder) have an internal cushion corner to prevent their damage when bring compressed around their head plug. The PipeGuard Range has gas bag (bladder) within which there are tension webs. These webs work in tension to ensure that the central end "anti-extrusion plate" aka "button" does not dangle free off center, then fail to cover the liquid connections, and thereby allow the gas bag (bladder) to vomit down the liquid connection.

These design features are to overcome the lack of quality experienced with poor copies, by ex-employees, of the PipeGuard range. It is the lack of attention to detail in these "copies" that has caused the quite unnecessary and very expensive requirement that says "bladderless dampeners required".

Slimline Flow Fluctuation Accumulator

Pipeguard Slimline Flow Fluctuation Accumulator Series "PiG-SL/--"
The Slimline series has the features set out above, but to match the feature of imports, the following change has been made: -
One liquid connection has been omitted. This is to necessitate the purchase and installation of an extra "T" piece. This is to prevent the PipeGuard from "filtering" pulsation from the system. This is to cause pulsation by requiring the liquid to have to go through a flow reversal instantaneously within one connection . This is to ensure that there can be no in place flushing between liquid campaigns or before service . This omittion of one connection is in order to increase the cost by creating a non- standard, like a "muffler with one connection".

Low Pressure Low Frequency Flo-Thru Pulse Dampener

Pipeguard Twin Port Low Pressure Pulsation Dampeners: Series "PiG-TW-LP/--"
For suction systems, where the loss of 5 psi / 0.33 bar, required to instantaneously reverse the flow in a single connection accumulator, would be detrimental to system performance and pump efficiency. The in-line flow-through multi-port configuration intercepts pressure waves that could otherwise break the liquid column and cause hammer and pump knock. The frequency response of the long slender gas bag ("bladders") is however very poor compared with large diameter membrane dampeners, [see PipeHugger type I b. below].

High Pressure Low Frequency Flo-Thru Pulse Dampener

Pipeguard Twin Port High Pressure Pulsation Dampeners: Series "PiG-TW-HP/--"
For Discharge systems, where because of liquid compressibility, the pump discharge displacement is delayed from the start of stroke acceleration, and this time lag causes a velocity jump combined with a depressurization explosion of compressed liquid --- the in- line flow-through multi-connection configuration enables the interception of the pressure disturbances, which are normally traveling at 3500 mph . Therefore as well as being a volume accumulator to prevent acceleration head, the PipeGuard TW is also a decompression shock interceptor. The frequency response of the long slender gas bag ("bladders") is however very poor compared with large diameter membrane dampeners, [see PipeHugger type I b. below]

Dimensional Drawings, Cross Sectional Views, Cut Sheets:

Low Pressure PipeGuards CAD File
"Close Coupling" thru-flow installation options CAD File

Pulsation Dampeners with Elastomer Membranes

PipeGuard (PiG) - Gas in a Bag (bladder) Pulsation Dampeners
PipeHugger (PHr-PeG) - Liquid in Bladder Pulsation Dampeners
PumpGuard (PuG) - Clear-flow Flex Tube Pulsation Dampeners

Pulsation Dampener Pulse Dampener Dampener Bladder Accumulator Accumulator Flow Fluctuation Accumulator Bladder Dampener Elastomer Bladder Dampener Plastic Pulsation Dampener Stainless Accumulator
Pulsation Dampeners with Elastomeric Membranes or Flexible Tubes
Precharge Gas in Elastomer Bladder Type
Viewsheets:
Gas Bladder Flow Fluctuation Accumulator
Integral Flange Face / O Ring Piping Base
Stainless Steel Flow Fluctuation Accumulator
Plastic Pulse Damper with Co-ax Option


Pulsation-Dampeners.com
Index | Selection / Quotation (What do you need?) | Contact Information

Click on the picture of the damper below to see how it works and is assembled, animated.
HP Liquid in Bladder Pulsation Dampers Gas Bladder Pulse Dampers / Accumulators LP Elastomer Membrane Surge Suppressors LP PTFE Diaphragm Pulse Dampeners HP PTFE Membrane Pulsation Dampeners Sludge Slurry Flexible Tube Dampners Pressure Pulsation Pulse Frequency / Frequencies

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