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Pulsation Dampeners

A Pulsation Dampener is an accumulator with a set pre-charge that absorbs system shocks while minimizing pulsations, pipe vibration, water hammering and pressure fluctuations. By minimizing pulsation in the system components like regulators, solenoids, sensors, etc., pumps will see decreased wear and have longer life. Pulsation dampeners are tied directly onto the discharge manifold or plumbed immediately downstream of the pump.

CAT PUMPS offers a wide assortment of pulsation dampeners to meet the demands of any application. From completely sealed to completely re-buildable. The bladders are pre-charged with nitrogen.

Specifications
ModelWorking Pressure
PB max.
[bar]		Operating
temperature max.
[°C]		Volume
[L]		Bladder
Material /
Pressure vessel		ConnectionWeight
[kg]
Model: 709608
Working Pressure
PB max.
[bar]: 200
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,075
Bladder
Material /
Pressure vessel: NBR / S
Connection: 3/8” G IG
Weight
[kg]: 0,7
Model: 703401
Working Pressure
PB max.
[bar]: 210
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,16
Bladder
Material /
Pressure vessel: NBR / St
Connection: 1/2” NPT AG
Weight
[kg]: 1
Model: 703400
Working Pressure
PB max.
[bar]: 210
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,16
Bladder
Material /
Pressure vessel: NBR / St
Connection: 3/8” NPT AG
Weight
[kg]: 1
Model: 703403
Working Pressure
PB max.
[bar]: 200
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,16
Bladder
Material /
Pressure vessel: NBR / S
Connection: 1/2” NPT AG
Weight
[kg]: 1
Model: 703404
Working Pressure
PB max.
[bar]: 200
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,16
Bladder
Material /
Pressure vessel: NBR / S
Connection: 3/8” NPT AG
Weight
[kg]: 1
Model: 703402
Working Pressure
PB max.
[bar]: 200
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,16
Bladder
Material /
Pressure vessel: NBR / S
Connection: 3/8” NPT AG
Weight
[kg]: 1
Model: 703407
Working Pressure
PB max.
[bar]: 180
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,16
Bladder
Material /
Pressure vessel: NBR / SS
Connection: 3/8” NPT AG
Weight
[kg]: 1
Model: 703406
Working Pressure
PB max.
[bar]: 180
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,16
Bladder
Material /
Pressure vessel: NBR / SS
Connection: 3/8” NPT AG
Weight
[kg]: 1
Model: 703408
Working Pressure
PB max.
[bar]: 180
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,16
Bladder
Material /
Pressure vessel: FPM / SS
Connection: 3/8” NPT AG
Weight
[kg]: 1
Model: 050400
Working Pressure
PB max.
[bar]: 400
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,45
Bladder
Material /
Pressure vessel: NBR / St
Connection: G 3/8" IG
Weight
[kg]: 4
Model: 703418
Working Pressure
PB max.
[bar]: 160
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,32
Bladder
Material /
Pressure vessel: NBR / SS
Connection: 1/2” NPT AG
Weight
[kg]: 1,5
Model: 704740
Working Pressure
PB max.
[bar]: 160
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,32
Bladder
Material /
Pressure vessel: NBR / SS
Connection: 3/4 ” NPT AG
Weight
[kg]: 1,5
Model: 703414
Working Pressure
PB max.
[bar]: 200
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,72
Bladder
Material /
Pressure vessel: NBR / S
Connection: 1” NPT AG
Weight
[kg]: 3
Model: 703415
Working Pressure
PB max.
[bar]: 140
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,72
Bladder
Material /
Pressure vessel: NBR / SS
Connection: 1” NPT AG
Weight
[kg]: 3
Model: 703416
Working Pressure
PB max.
[bar]: 140
Operating
temperature max.
[°C]: 80
Volume
[L]: 0,72
Bladder
Material /
Pressure vessel: FPM / SS
Connection: 1” NPT AG
Weight
[kg]: 3
Model: 703411
Working Pressure
PB max.
[bar]: 100
Operating
temperature max.
[°C]: 80
Volume
[L]: 2
Bladder
Material /
Pressure vessel: NBR / S
Connection: 1 1/4” NPT AG
Weight
[kg]: 4,4
Model: 703412
Working Pressure
PB max.
[bar]: 100
Operating
temperature max.
[°C]: 80
Volume
[L]: 2
Bladder
Material /
Pressure vessel: NBR / SS
Connection: 1 1/4” NPT AG
Weight
[kg]: 4,4

Structure

The pulsation damper consists of a welded pressure vessel to which a nozzle is welded on the liquid side. The gas and liquid are separated by a previously inserted bladder. A bladder button is inserted in the bottom of the diaphragm to prevent destruction of the bladder when it is completely emptied. The bladder accumulator can be refilled by means of a gas filling screw. The liquid connection can be supplied in different versions. It is not possible to replace the bladder!

Gas filling screw

Pressure vessel

Bladder

Membrane button

Liquid connection