Positive Displacement (diaphragm) pumps create pressure pulsations (spikes) and hydraulic shock due to their stroking action characteristics.  These pulsations potentially can harm, damage or shorten the life of system components.  A properly set-up and sized pulsation dampener can remove up to 99% hydraulic shock, noise and vibration. Pulsation dampeners also create continuous flow enhancing all-around performance in industrial and chemical dosing applications.

How do they work?

The pulsation dampener creates a low pressure area in the system large enough to absorb pressure spikes.  The pulsation dampeners membrane made of chemically resistant materials, e.g., Teflon®, Viton®, etc. compressed air behind the membrane causes it to flex when exposed

to a pressure spike, dampening (cushioning) the pressure spike. Properly pressurizing the pulsation dampener will maximize its effectiveness. The initial “charge” should be 80% of the system’s operating pressure. Air is then added or released via a Schrader valve until system vibration is eliminated.

For the complete write up and installation instructions:

Pulsation Dampener Benefits