The Metering Pump is a controlled volume, positive displacement pump, which will accurately transfer a predetermined volume of fluid (liquid, gas, or slurry) at a specified amount or rate into a process or system.
It is defined by function, rather than by technology.
Positive Displacement – multiples of a fixed volume.
Accurate and Repeatable flow rates within 1%
Adjustable volume control is typically inherent in design.
Traditionally reciprocating designs, although rotary configurations increasingly applied.
Ideally, capable of handling a wide range of liquids, including corrosives, abrasives, viscous, toxic . . .
Capable of generating sufficient pressure to permit injection of liquids into processes.