Pulsation

Pulsation

Benefits:

  • Produces smooth, consistent flow
  • Protects downstream system components
  • Reduces water hammer
  • Improves performance at low rpm
  • High cycle rate application improvement
  • Improves performance at low rpm
  • High cycle rate application improvement
  • Reduces operator fatigue in hand-operated systems

Due to the design of the positive displacement pumps, small pressure spikes are created during each rotation. In critical or heavy operation, these spikes can cause accelerated wear or damage to the pump or downstream components. The installation of a pulsation dampener is your best safeguard against premature wear.

A pulsation dampener contains a dry nitrogen charged bladder that is used to absorb both the high and low fluctuations of pressure produced by a positive displacement pump. During each triplex pump rotation, the flow demand changes direction 6 times, which causes a pressure variance of 16-20% from nominal. A pulsation dampener’s bladder not only absorbs the pressure spikes during operation, but due to the nitrogen charged bladder, it pushes flow back into the stream during the low pressure wave, reducing the total fluctuation to 2-3% with a properly sized dampener.

For best results, the dampeners should be mounted as close to the pump head as possible, preferably in a vertical position. Dampener should be charged at 60% of operating pressure.
 

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