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

Pulsation Dampers, for Lower Pressures, with PTFE diaphragms, also elastomer backed bonded Teflon ®, and LDI inc "Flexflon".

SIZE and PRESSURE SELECTION TABLES for Pulsation Dampers with Hydro-Formed Shells, Low Pressure, with plastic Membranes.

Alternate diaphragm options shown in drawing below 

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Low Pressure Hydroformed dampers with PTFE Flecflon Diaphragms >> Click for PDF

flow-thru-cone base direct connection

                          
SINGLE MALE PIPE THREAD, OR WITH FLANGE ADDED SPECIALS ARE AVAILABLE WHEN PRESSURE PULSATION INTERCEPTION AND IN PLACE FLUSIBILITY ARE NOT REQUIRED  

Please see below "Medium Volumes" tables.

 

FOR SMALL DAMPER TABLE
FlexOrber

Typical volumes and pressures for small VLP & LP  PTFE diaphragm membrane type pulsation dampers.

PTFE (Dupont "TEFLON ®") and LDI "Flexflon TM" are stiff "dead" plasomers that need a greater force to cause their deflection - reaction to pulsation,  If you need pulses dampened down to a few or parts of  a bar, then it may be necessary to refer to the factory for advice - email di@ldi.co.uk , which may include choosing a large damper membrane size than your initial damper selected by volume.  This may result in a greater "dead volume" and system time lag to changes in overall stable system flow.

PTFE Flexflon membranse designated ---"BF" (Brim Flat)  are clamped betwen the thin gauge hydroform low pressure shells without a "spacer ring" ,  becuse these "BF series Flexflon membranes do not have an inegral seal beed.


 Ordering  --
 Major  Material
Nominal Compressible
Volume
Design Pressure @93 C Connections

To pump
Port Type

To system
Length without pipes Diameter  Weight Diaphragm , Spares Kit
"SK"  Nbr.
  (Liters) (Bar)  M=Male   (mm) (mm)  (kg) Nom. mm  
SoG-SS 0.17 52 One 3/8" MNPT   ---------       DW 127
 
'' 0.25 22 One 1/2"MNPT   --------- 127 165  7 DW123 BF
'' 0.50 17 One1/2"MNPT      --------- 140 198  9 DW175 BF
'' 0.50 35 1/2"M     x 3/8"M 140 198  9 DW175
'' 0.50 100 1/2"M     x 3/8"M 163 241  19 DW175
Flo-SS  0.2 Liter etc  ABOVE  101 Bar  GOTO MINIATURE HIGH PRESSURE DAMPERS PTFE
 
SoG-SS 1.0 17 One 3/4" MNPT MNPT 152 208  9 DW187BF
'' 1.0 35 3/4"M    x 1/2"M 157 254  14 DW187
'' 1.0 110 3/4"M    x 1/2"M 152 259  23 DW187
Flo-SS 0.90 Liter  ABOVE  111 Bar  GOTO HIGH PRESSURE DAMPERS PTFE
 
SoG-SS 1.64 12 One 1.0" MNPT 197 254  11 DW200BF
'' 1.64 32 1.0"M    x 3/4"M 180 270  22 DW200
'' 1.64 114 1.0"M    x 3/4"M 203 290  28 DF200
Flo-SS 1.5 Liter  ABOVE  115 Bar  GOTO HIGH PRESSURE DAMPERS PTFE
 

 

To save down time piping sub-bases are used . When the damper capsule is released from the pressure pulse interception base , it is replaced with a bolt on "Flo-Thru"  * block. 

See "TopHat" animation please go to  http://www.pulseguard.co.uk/images/Pipe-Base_left.gif

 

piping bases save down time, intercept pressure pulsation


medium volume ptfe dampers
FlexOrber

Two and a half liter through five liter popular sandard sizes of  pulse damper with  PTFE
(Dupont "TEFLON ®")  and LDI "Flexflon TM".

Please note: These are unresponsive plastics requiring more pressure to make them move without delay - to react to pulses,  If you need pulses dampened down to  0.1 bar oe less, then refer to tech support at the plant for guidance - email di@ldi.co.uk , recommentation may include choosing a bigger diameter damper than your first damper chosen size.  This  larged entrained "dead volume" and system time delay to changes in theoretical steady state system pressure.

Flexflon PTFE  diapnragm designated ---"BF" (Brim Flat)  are held betwen the light gauge hydro-formed low pressure housings with no "spacer ring" ,  as the "BF series Flexflon diaphragms have no seal beed integrally.

Ordering --
Major Material
Nominal Compressible
Volume
Design Pressure @93 C Connections

To pump
Port Type

To system
Length without pipes Diameter  Weight Diaphragm , Spares Kit
"SK"  Nbr.
SoG-SS 2.5 10 One 1.5"MNPT  ----------
216 298  17 DW223 BF
'' 2.5 28 1.25"M x 1.0"M 196 290  24 DW223
'' 2.15 100 1.25"M x 1.0"M 203 307  36 DF223
Flo-SS 2.0 Liter  ABOVE  101 Bar  GOTO HIGH PRESSURE DAMPERS PTFE
 
SoG-SS 3.8 35 1.5"M x 1.0"M 185 351  35 DF268
'' 4 85 1.5"M x 1.25"M 222 371  52 DF268
Flo-SS 3.0 Liter  ABOVE    86 Bar  GOTO HIGH PRESSURE DAMPERS PTFE
 
SoG-SS 5.7 31 One 3" 150#  ----------
254 457  55 DW305
'' 5.7 48 2.0"M x 1.5"M 231 432  67 DF305
'' 5 110 Single 3" 900#  ---------- 260 470  95 DF305
'' 5 110 PB 2"Wx2"W   260 470  118 DF395
Flo-SS 4.5 Liter  ABOVE  111 Bar  GOTO HIGH PRESSURE DAMPERS PTFE
 


SINGLE MALE PIPE THREAD, OR WITH FLANGE ADDED SPECIALS ARE AVAILABLE WHEN  PRESSURE PULSATION INTERCEPTION AND IN PLACE FLUSIBILITY ARE NOT REQUIRED

Flexirber-single-connections
"BF" (Brim Flat)  diaphragms are clamped betwen the thin gauge hydroform low pressure shells without a "spacer ring", because
these "BF series Flexflon membranes do not have an inegral seal beed. Flexflon membranse designated BF are only in Very Low Pressure dampers "VLP"

LARGER VOLUMES OF PULSATION DAMPER WITH PTFE DIAPHRAGMS
FlexOrber Rigid non elastic PTFE (Dupont "TEFLON ®")  and LDI "Flexflon TM"  do not readily respond to force from pulsation, reaction is slow. Pulses dampened down to a small level of residual pulsation, say a few or parts of  a bar, can be achieved, but it may be necessary to
refer to the factory for advice - email di@ldi.co.uk .   Advice may include choosing a large damper membrane size than your initial damper selected by volume.  A greater "dead volume" may result, and system time lag to changes in theoretical steady state system flow will need to be allowed for.
 Ordering  --
 Major  Material
Nominal Compressible
Volume
Design Pressure @93 C Connections

To pump
Port Type

To system
Length without pipes Diameter  Weight Diaphragm , Spares Kit
"SK"  Nbr.
SoG-SS 7.25 40 2.5"M x 2.0"M 292 483  150 DF345
'' 7.25 80 2.5"M x 2.0"M 292 500  190 DF345
Flo-SS 6.0 Liter  ABOVE    81 Bar  GOTO HIGH PRESSURE DAMPERS PTFE
 
SoG-SS 10.5 35 Single 4" 300#   --------- 318 525   DF 400
'' 10.0 69 2.5" 2.5" 312 550
 850 DF 400
'' 9.0 93 2.5" 2.5" 300 575   DF 400
Flo-SS 8.0 Liter  ABOVE    94 Bar  GOTO HIGH PRESSURE DAMPERS PTFE
 
SoG-SS 16.0 30 3.0"M x 2.5"M 337 590  209 DF 450
'' 14.0 80 3.0"M x 2.5"M 322 610  209 DF 450
Flo-SS 12.0 Liter  ABOVE  81  Bar  GOTO HIGH PRESSURE DAMPERS PTFE
 


How a Teflon diaphragm damper works.

 

PTFE diaphragm type pulsation dampers typically applied to high pressure diaphragm type pump heads.

 

Flexorber LP Damper animation Diaphragm-pumps-with-PTFE-dampers



FlexOrber Pulsation Dampers with PTFE Diaphragms
Low Pressure Drawing and Size Selection Tables
High Pressure Drawing and Size Selection Tables
LP PVDF Lined for Special Compatibility

PTFE Membrane Type Pulsation Dampener Drawings / Viewsheets
Click on one of the pulse damper images below.

FlexOrber High Pressure FlexOrber Low Pressure FlexOrber Polished Stainless for Food and Drug FlexOrber PVDF Lined


*Teflon is a registered trademark of DuPont.

 

 



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