SMALL DIAMETER PULSE DAMPNERS Featuring
- FLOW STABILIZATION
Are excellent flow fluctuation stabilizers.
- HIGH PRESSURE AT LOW COST
"PipeGuard" "Slim Line" range dampeners are extremely competitive for high pressure application.
- FOR SALINE ENVIRONMENTS
With full stainless steel construction are ideal for offshore oil and gas control sytems.
- GREATER INTEGRITY
The gas bag "bladder" in this damper design is a seamless one piece molding; greatest compatibility and integrity.
Common Elastomer Availability from MEMBRANO_FLEX Ltd. Div of LDI Ltd for you to choose from:-
Information Source - edited from "KEVIN-TECH" aka Kevin Bebb's Technical Notes - LDI Ltd. in-house proprietary , since 1963. The compound ingredient percentages are chosen by LDI Ltd. to cause similar physical properties, and from advice by the Rubber& Plastics Research Association (aka RAPRA.) and others. :-
In the uncured / un-polymerized state,: To be easily transfer-injectable over distances greater than 3x the item diameter, without the use of long oil alkids etc. for plasticization.
In the cross linked / polimerized state, to have :-
- Elongation at break in excess of 600%
- UTS greater than 2000 psi (140 bar)
- IRH Shore "A" scale hardness 55-60
- Good compression set resistance for seal-points
- The use of "non-leaching" plasticizer -
IE that crosslinks within the cured material
- No Sulfur
MATERIAL TO CHOOSE FROM.
Note - "LDI" are not compatibility engineers.
Be sure to check your selection against the "O" rings Seal, gasket,
valve diaphragm, pump packings that have proved satisfactory for
your system.
- LONGER LIFE
The anti-extrusion plate of this pulsation dampener can not jam like stem guided poppet valve.
Small | Medium | Large | Low Pressure | High Pressure | Ultra High Pressure | More Information
 Typical volumes and pressures for small low pressure gas in elastomer bladder type pulsation dampers. |
| Type / Ordering |
Volume |
Design Pressure
@93 C |
Connections (to pump / to sys.) |
Std Ports 45x45 |
Max single flange |
Length without pipes |
Diameter |
Weight |
Spares Kit Part Number |
|
(liters) |
(bar) |
|
|
|
(mm) |
(mm) |
(kg) |
|
| PiG-**- |
.016 |
240 |
1/8"x1/8" |
NF |
Flange/welding cost/weigh more than mini damper |
104 |
44 |
1 |
B24x50 ? |
| PiG-SS- |
.032 |
125 |
1/4"x1/4" |
NF |
|
165 |
35 |
2 |
B24x80 ? |
| PiG-SS- |
.1 |
85 |
3/8"Fx1/4" |
NF |
|
152 |
60 |
2 |
B44x75 ? |
| PiG-SS- |
.16 |
115 |
|
|
|
221 |
48 |
3 |
B36x120 ? |
| PiG-SS- |
.25 |
85 |
1/2"Fx3/8" |
NF |
.75" (extra chg) |
191 |
70 |
5 |
B57x98 ? |
| PiG-SS- |
.33 |
105 |
|
|
|
264 |
60 |
4 |
B50x160 ? |
| PiG-SS- |
.5 |
85 |
1/2"Fx3/8" |
NF |
1" (extra chg) |
267 |
70 |
6 |
B57x171 ? |
| PiG-SS- |
.5 |
85 |
3/4"Fx1/2" |
NF |
1.25" (extra chg) |
290 |
73 |
5 |
B62x175 ? |
| PiG-SS- |
.66 |
85 |
3/4"Fx1/2" |
NF |
1.5" (extra chg) |
318 |
73 |
7 |
B62x207 ? |
| PiG-SS- |
.75 |
125 |
|
|
|
315 |
73 |
7 |
B62x207 ? |
| PiG-SS- |
1 |
50 |
3/4"Fx3/4" |
NF |
1/2" 300# |
368 |
88 |
17 |
B72x255 ? |
PTFE FLEXFLON MEMBRANES
Featuring:
- AGRESSIVE CHEMICAL
Typical chemical metering pumps are matched by flow smoothing dampeners from this 0.5 - 16 Liter Flexorber LP range of 12 damper sizes.
- FORCING RESPONSE from PTFE
As PTFE / Teflon ® / Flexflon™ is a stiff un-responsive diaphragm material, the Flexorber pulse dampners force response to pulsation by causing the flow to go through the dampening chamber - with seperate inlet and outlet connections.
- HIGHER FREQUENCY ABILITY
This same flow-through feature that cause reaction to volumetric flow fluctuation, also enables high frequency pulsation to be intercepted and damped.
- IN PLACE FLUSHING
These Flexorber low pressure pulsation dampers are also in place flrow-through flushable between each different chemical compaign.
- SMOOTH SURFACES
In place flushibility plus an exra polishing operation makes the Flexorber LP an often specified design for food, drug, and liquid chromatography use, with Tri-Clamp or IDF connections.
Small | Medium | Large | Very Low Pressure | Low Pressure | High Pressure | Plastic | More Information
 Typical volumes and pressures for small LP PTFE diaphragm membrane type pulsation dampers. |
| Type / Ordering |
Volume |
Design Pressure
@93 C |
Connections (to pump / to sys.) |
Port Type |
Length without pipes |
Diameter |
Weight |
Spares Kit Part Number |
|
(liters) |
(bar) |
|
|
(mm) |
(mm) |
(kg) |
|
| SoG-SS |
.5 |
52 |
1/2"M x |
3/8"M |
140 |
198 |
9 |
DW160 |
| SoG-SS |
1 |
34 |
3/4"M x |
1/2"M |
157 |
254 |
14 |
DW175 |
| SoG-SS |
1.25 |
62 |
3/4"M x |
1/2"M |
178 |
279 |
27 |
DW187 |
| SoG-SS |
1.64 |
32 |
1.0"M x |
3/4"M |
180 |
270 |
22 |
DW200 |
| SoG-SS |
2.5 |
28 |
1.25"M x |
1.0"M |
196 |
290 |
24 |
DW223 |
| SoG-SS |
3.8 |
35 |
1.5"M x |
1.0"M |
185 |
351 |
35 |
DW268 |
| SoG-SS |
5.7 |
48 |
2.0"M x |
1.5"M |
231 |
432 |
67 |
DW305 |
SECONDARY CONTAINMENT - HAZARD ALERT
Featuring:
- MATCHES "SANDWICH" AND "SEALED" DIAPHRAGM PUMPS
High performance diaphragm process pumps with rupture detection often deployed as the main fluid mover for large flow rates of liquids that are compressible and so need jacowski pulsation & shock surge pulsation suppression.
- EVEN PYROFORIC SERVICE
Flexorber pulsation dampers with flow through and several hot nitrogen flush connections are ideal for pyrofores.
- WITH VSG DRIVES
When API 675 pumps are used in API 674 application because of their "sealed - hermetic" high pressure designs. Flow contol of these "metering" pumps is by variable speed drives. Variable speed results in a wide range of forcing frequencies. Only the multi-port flow through FlexOrber pulsation dampeners can match the system needs.
- DIAPHRAGM CHOICES
Please see http://www.pulsation-damper.co.uk/Pulsation-damper-PTFE-Diaphragm-Stainless-housing-Low-Pressure.html top right corner for diaphragm alternates that go from the most robust to ultra sensitive covering all pulsation damping requirements.
- NOT BELLOWS
Pulseguard also offer bellows type dampeners,
but as a bellow is the most crevatious form of membrane
the smooth PTFE daiphragm surface in a flow though housing
of the Flexorber HP dampner is generally process preferred.
Small | Medium | Large | Very Low Pressure | Low Pressure | High Pressure | Plastic | More Information
 Typical volumes and pressures for small high pressure PTFE diaphragm membrane type pulsation dampers. |
| Type / Ordering |
Volume |
Design Pressure
@93 C |
Connections (to pump / to sys.) |
Length without pipes |
Diameter |
Weight |
Spares Kit Part Number |
|
(liters) |
(bar) |
|
(mm) |
(mm) |
(kg) |
|
| Flo-** |
0.25 |
140 |
1/8"M x 1/8"M |
135 |
152 |
11 |
DW85 |
| Flo-SS |
0.5 |
140 |
1/4"M x 1/4"M |
135 |
160 |
14 |
DW93 |
| Flo-SS |
.11 |
140 |
3/8"M x 3/8"M |
135 |
165 |
15 |
DW113 |
| Flo-SS |
.16 |
140 |
1/2"M x 1/2"M |
135 |
178 |
16 |
DW127 |
| Flo-SS |
.008 |
207 |
1/8"M x 1/8"M |
89 |
135 |
5 |
DW65 |
| Flo-SS |
.03 |
414 |
1/8"M x 1/8"M |
142 |
160 |
11 |
DW85 |
| Flo-SS |
.05 |
276 |
1/4"M x 1/4"M |
142 |
160 |
15 |
DW93 |
LARGE DIAMETER DAMPENERS for Low Pressure and Suction
Featuring
- ACCELERATION HEAD REMOVAL
First class for addressing suction acceleration head.
The separate inlet port allows continuous flow, while
the seperate outlet to a pump provides the jerking flow
without the need to lose pressure (k) by having
to accelerate the entire supply line.
- PRESSURE LOSS SAVING
The lack of reciprocation up and down a single
connection produces much less pressure pulsation
than non flow-through designs.
- LOWER COST COMPATIBILITY
Suitable for difficult to handle liquids because only the
base plug and anti-extrusion plate become wetted,
small amounts of Aloy 20, Hasteloy, Titanium, even
Zircomium will complete the damper construction.
- PREVENTS CAVITATION
Cavitation reduction by instant filling of pump
chambers stops negative pressure from running back
up the supply line, and breaking the fluid column,
which is the normal reason for pump knock.
- HIGH FREQUENCY INTERCEPTION
High Frequency pulsation , and acoustic resonse from
the lengths of the piping is intercepted by the LP
Pipehugger range just as efficiently as in the High
pressure Pipehugger damper.
Small | Medium | Large | Huge | LP | HP | Plastic | More Information
 Typical volumes and pressures for small low pressure liquid in elastomer bladder type pulsation dampers. |
| Type / Ordering |
Volume |
Design Pressure
@93 C |
Connections (to pump / to sys.) |
Porting |
ANSI B16.5 Largest Bolt Circle Diameter |
Length without pipes |
Diameter |
Weight |
Spares Kit Part Number |
|
(liters) |
(bar) |
|
|
|
(mm) |
(mm) |
(kg) |
|
| PeG-**- |
.16 |
100 |
1/8"x1/8" |
NF |
3/4" 600# |
132 |
76 |
2 |
D64y42 ? |
| PeG-SS- |
.33 |
100 |
3/8"x3/8" |
NF |
1/2" 150# |
132 |
102 |
5 |
D85L ? |
| PeG-SS- |
.66 |
100 |
1/2"x3/8" |
NF |
1/2" 300# |
170 |
140 |
9 |
D115L ? |
| PeG-SS- |
1 |
52 |
3/4"x1/2" |
NF |
1.0" 600# |
175 |
152 |
8 |
D125y65 ? |
LARGE DIAMETER DAMPENERS for High Pressure and High Frequency
Featuring
- PULSATION DISSIPATION
Are best at dampening pressure pulsation as a pressure
spike entering a large diameter chamber from a smaller hole,
dissipates before it can reflect from the vessel wall.
- ASSURED RESPONSIVENESS
The greater dimension provides area for separate inlet
outlet conections - this gives in-line flow-through pulse interception.
Interception ensure the response that dampens the pulsation.
- COMPETITVE HOUSINGS
The bladder has liquid inside, the process fluid does not contact
the shell, the shell is available in low cost epoxy coated carbon steel.
- PARTICULATE SUITABILITY
Thoroughly suitable for sludges and slurries, and solids carrying applications.
When the bladder flexes it shakes all particulate loose - it is not
packed into a "cake" against the damper wall, as in gas bag dampners.
- PULSATION IS DIRECTIONAL
Full 180 degrees flow direction change causes all transients to impinge
on the flexible membrane.
Small | Medium | Large | Huge | LP | HP | More Information
 Typical volumes and pressures for small high pressure liquid in elastomer bladder type pulsation dampers. |
| Type / Ordering |
Volume |
Design Pressure
@93 C |
ANSI B16.5 Largest Circle Bolt Diameter |
Connections (to pump / to sys.) |
Standard Orientation 0x0 and Type |
Length without pipes |
Diameter |
Weight |
Spares Kit Part Number |
|
(liters) |
(bar) |
|
|
|
(mm) |
(mm) |
(kg) |
|
| PHr-TW-**/8i- |
.13 |
690 |
1/2" 2500 |
1/8"x1/8" |
NF |
170 |
102 |
6 |
D64y42 ? |
| PHr-TW-ss/18i- |
.3 |
690 |
3/4" 2500 |
3/8"x3/8" |
NF |
222 |
114 |
15 |
D77y53 ? |
| PHr-TW-ss/40i |
.66 |
248 |
1" 1500 |
1/2"x3/8" |
NF |
226 |
127 |
13 |
D100y60 ? |
| PHr-TW-ss/40i |
.66 |
448 |
1" 2500 |
1/2"x1/2" |
NF |
279 |
150 |
24 |
D100y60 ? |
| PHr-TW-ss/61i |
1 |
138 |
1/2" 600# |
3/4"x1/2" |
NF |
249 |
168 |
22 |
D125y65 ? |
| PHr-TW-ss/61i |
1 |
400 |
1/2" 1500# |
3/4"x3/4" |
NF |
285 |
178 |
31 |
D125y65 ? |
| PHr-TW-ss/122i |
2 |
138 |
3/4" 1500# |
3/4"x3/4" |
NF |
239 |
168 |
20 |
D145y75 ? |
HIGH VISCOSITY - PLUG FLOW
Featuring:
- MATCHES HOSE PUMPS
Connections 3" / 75mm through 6" / 150mm.
For pulp and paper coatings slurries.
- NO ENTRAPMENT
Food and drug industry version with
polished stainless wetted parts and tri-clamp
or IDF fittings.
- IN PLACE FLUSHING
Direct straight line flow through, roddable
if ever blocked.
- LARGER PIPE SYSTEMS
Other sizes 8" / 200m through 14" / 356mm
for inline standing wave shock and surge.
Small | Medium | Large | Food and Drug | RF | XLRF | More Information
|
Typical volumes of SMALL connection flow through flex tube type pulsation dampers.
Designed for use with high viscosity fluid dampening jobs, with sludges, slurries even containing large solid objects. These damper applic-ations may even encompass sharp bodies, that may slit the damper "flextube" , for this we surround it with "PermaCushion foam" in place of a gas precharge |
| Type / Ordering |
Nominal Volume |
Length Connection to Connection |
Diameter |
Weight |
Seal Bead OD |
Neck OD |
Lump OD |
Tube Ctr OD |
Tube Length |
Section Area Cm2 |
FDA-N, FDA-E, FDA-V |
| |
(Liters) |
(mm) |
(mm) |
(kg) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
|
|
| |
| Pug 0.5 |
1.9 |
366
3/4" x 3/4" |
143 |
21.9 |
75mm |
58mm |
115mm |
100mm |
150mm |
103 |
?/ |
| |
| Pug 1.0 |
3.8 |
416
1" x 1" |
143
5" pipe |
23.6 |
75mm |
58mm |
115mm |
100mm |
200mm |
103 |
?/ |
| |
| Pug 1.5 |
5.7 |
456
1.25" x 1.25" |
143
5" pipe |
25.2 |
75mm |
58mm |
115mm |
100mm |
250mm |
103 |
?/ |
| |
| Pug 2.0 |
7.6 |
616
1.5" x 1.5 |
143
5" pipe |
26.8 |
75mm |
58mm |
115mm |
100mm |
300mm |
103 |
?/ |
Pumps Finland images are available for educational use, provided you include the following link: "Images courtesy of Harri Österman"
