Page 361 - Centrifugal Pumps 2E

326 Centrifugal Pumps: Design and Application

Ferrous and Ferric Chloride

This is a byproduct from acid pickling of iron and steel. It is used for
etching reagent in copper clad printed circuit boards, for electronics, or
as a chemical coagulant for water treatment on waste water. The pumps
are either titanium or vinyl ester.

Chlorinated Hydrocarbons

Chlorinated hydrocarbons are used to produce PVC, chloroform, car-
bon tetrachloride, solvents, flame retardants, insecticides, adhesives,
Pharmaceuticals, metal cleaning, and dry cleaning. The pumps are usu-
ally 316 or ductile iron.

Ethylene and Propylene Glycol

Ethylene glycol is permanent antifreeze. It is also used in alkaline res-
ins for coating in brakes, shock absorbers, and latex paints. Propylene
glycol is used in the manufacture of unsaturated polyester resins. It is
used to make cellophane, tobacco moisture retention material, brake flu*
ids, and food additives. These pumps are either 316 or ductile iron.

Synthetic Glycerine

It is used for making resins, cosmetics, cellophane, tobacco, food bev-
erages, and explosives. The pumps can be nonmetallic material.

Corn Syrup
Used in corn oil process. Usually 316 or nonmetallic materials.

Dyes

Used for such things as the ink in ball point pens and dying silk and
wools. Usually nonmetallic pumps.

Pesticides

Insecticides such as malathion for controlling insects; herbicides for
controlling plant growth. These materials are solvents and nonmetallic
pumps are usually not suitable for this application.