Pulsation Dampeners

Pulsation Dampeners

Protect Pumping Systems from Vibrations and Pressure Fluctuations

Pulsation Dampener Models



A Pulsation Dampener is an accumulator with a set pre-charge of nitrogen that absorbs system shocks and minimises pulsations, pipe vibration, water hammering and pressure fluctuations. By minimising pulsation in the system, components such as regulators, solenoids, sensors, etc., the pump will see decreased wear and experience longer life. Pulsation dampeners are fitted 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. The bladders are pre-charged with clean, dry nitrogen to eliminate moisture and extend the life of the pulsation dampener.

Due to the design of positive displacement pumps, small pressure spikes are caused during each rotation. In certain operations, these spikes can cause accelerated wear or damage to the pump or downstream components. The Installation of a pulsation dampener is the best practice to reduce pressure fluctuation.

NOTE: Fluctuation comparison shown is an illustrative representation. Actual results will vary based on model and application.


Typical Usage: 
Used when a smooth output flow and pressure is required.

Product Range: 

  • Flow Rate: 45-265 L/min
  • Pressure: 100-500 bar


  • Pressurised bladder absorbs impact from pressure spikes, providing smooth flow.
  • Protects downstream components (e.g., regulator, unloader, relief valves.
  • Reduces water hammer.
  • Improved performance at low pump RPM. 

Available Materials:

  • Outer Housing
    • Carbon Steel
    • 316 Stainless Steel
  • Bladders
    • Medium Nitrile (NBR)
    • Fluorocarbon (FPM)

Please refer to our Sell Sheet.

Sell Sheet

System Design Guide



Whiteboard Session - Pulsation

Why use a pulsation dampener? How do they work? Where is the best location in a system? Steve Larson, P.E. and Engineer Manager, discusses how to size and locate pulsation dampeners for best results. 



1 Fleet Business Park
Sandy Lane
Church Crookham
FLEET, Hampshire
GU52 8BF

Call Now

T.01252 622031
F.01252 626655

Contact Us