How to Size a Pulsation Dampener: Why Volume Alone Is Not the Right Calculation
Most pulsation dampeners are selected by volume — the engineer picks a 1-litre or 2-litre unit based on pump flow rate and calls it done. The dampener is installed, the system runs, and the pulsation problem is either solved or it isn’t. When it isn’t, the usual response is to upsize the dampener volume. This […]
Pulsation in Chemical Dosing Systems: How It Damages Instrumentation, Joints, and Downstream Processes
AODD pumps and diaphragm dosing pumps deliver flow in discrete slugs — one slug per stroke, twice per revolution. The flow is not continuous; it is a series of pressure pulses separated by brief pauses. In a short, low-pressure system with few sensitive components, this is inconsequential. In most industrial dosing installations, it is not. […]
The Relationship Between Stroke Rate and Pulsation — And Why It Matters Downstream
Every stroke of an AODD pump delivers a discrete pulse of fluid. This is not a defect — it is the fundamental operating principle of any positive displacement pump. But pulsation is also one of the most overlooked sources of process problems downstream, and the stroke rate you set has a direct and predictable effect […]