Chemical Dosing

The process of chemical dosing can be found in different chemical process segments. In some or most cases‚ the accuracy‚ reliability of the pump is a critical issue since it determines the aesthetics and/or functionality of the product. The Zenith external gear pumps are the common pump used in this application as well as the Allweiler branded Peristaltic Pumps.

External Gear Pumps CIRCOR Zenith branded pumps utilize an intermeshing gear system that rotates within a housing. As the gears rotate‚ a void is created drawing the material into the pump. The tight operating tolerances of the gears and available material options for the housing provide significant advantages in fiber‚ polymer processing‚ adhesives‚ paints‚ and food markets.

Series Flow Range Maximum Range
0.16 – 27‚000 cc/min
172 Bar
B Series
0.16 – 200 cc/rev
206 Bar
0.16 – 200 cc/rev
275 Bar
1‚800 cc/min
48 Bar
496 Bar

Peristaltic Pumps In a peristaltic pump‚ the pumped volume is bound by the inner surface of the flexible tube and product volume is contained between two contact points of the rotor and the inner surface of the tubing. Peristaltic pumps are used to meter thin to highly viscous liquids‚ pasty‚ neutral or aggressive‚ pure or abrasive liquids‚ gaseous liquids or liquids that tend to foam and even liquids with fibrous and solid components.

Series Flow Range Maximum Pressure % Solids Permitted by Volume
Up to 1.2 m3/h
4 bar
Up to 60 m3/h
16 bar