Changing needs and requirements have caused pump technology to evolve.
IWAKI
09/02/2016
In the American National Standards Institute standard 7.0, the Hydraulic Institute defines controlled-volume metering pumps as “reciprocating positive displacement pumps typically used for the injection of chemical additives, proportional blending of multiple components, or metered transfer of a single liquid. These types of pumps are used in applications requiring highly accurate, repeatable and adjustable rate of flow.”
![Metering pumps](/sites/default/files/0816/20141203_100708.jpg)
![hydraulically backed metering pump](/sites/default/files/0816/ax_construction_700px.jpg)
![Large electronic solenoid metering pumps](/sites/default/files/0816/20141203_100733.jpg)
![Cross-section of mechanical metering pump wet end](/sites/default/files/0816/CONST_LK_A.jpg)
![Metering pumps with explosion proof motors](/sites/default/files/0816/LK_Pumps_App.jpg)