A dampner is a hydraulic device used to reduce pulsations in a hydraulic system.
This differs from a damper
which is a hydraulic device used to damp vibrations in a physical system that the hydraulics are connected to.
A Pulsation Dampner is used in a piping system, generally adjacent to the source of the flow or pressure disturbance, which is typically a modulating element like a pump or a flow control valve.
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