When the liquid pressure falls in the piping system, the pulsation dampeners (also known as pulse dampeners, pulsation dampers, pump inlet stabilisers) supply extra pressure to the discharge between the pump strokes by displacing liquid by means of diaphragm movement. This pumping action created by the dampener, decreases the pressure variations and pulsations.
All Pumps recommend Blacoh. They are the industry standard for dampening the pulsation created by positive displacement pumps and have been in business for more than 30 years.