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4.3 Flow Rate
PulsaPro has pulsating flow rates, generated by the alternating movement of the piston and the
action of the check valves on the pump head which determine flow direction. Pump flow rate is
adjustable and increases or decreases in direct proportion to the variation of the stroke adjustment.
The theoretical flow rate – corresponds exactly to the volume described by the movement of the
diaphragm.
The actual flow rate – is inevitably lower than the theoretical flow rate, due to the volumetric
efficiency of the pump. It varies depending on the type and size of the pump, the nature and
viscosity of the liquid to be pumped, working pressure, etc.
4.4 Intended Use
PulsaPro 680, 880, and 7120 pumps are designed for dosing liquid fluids (flammable, acids,
alkaline, solvents, etc.) at ambient temperature or heated, suitable for continuous service.
These pumps are used in the following markets:
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Chemical Processing, Petrochemical, Oil & Gas, Power & Energy, Water/Wastewater
treatments, and General Industries.
Applications may include but not limited to:
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Amines, Defoamers, Oxygen Scavengers, Disinfectants, Oil Additives, Acids, Demulsifiers,
Caustics, Methanol, Biocides, Corrosion Inhibitors, Ethylene Glycol, Anti-Scalants, and other
chemical feeds.
4.5 Components and Operation
Reagent Head (Wet End)
– the typical reagent head assembly consists of the reagent head,
diaphragm, and the suction/discharge check valves. This assembly is the only part of the pump to
contact the process liquid; consequently, maintenance is critical to pump performance.
Figure 3
