Chemicals

 

Due to the variety of processes in chemical and process engineering, there are strict requirements on the materials used in these areas. The materials must withstand saline solutions, strong acids and lyes, high pressures and extreme temperatures.

Contaminants usually increase aggressiveness. Particles carried in the pumped liquid can also lead to abrasion wear.

It is not always easy to select the most economical material with sufficient stability.

Saline Solutions
Saline Solutions
While many saline solutions are non-corrosive or only slightly corrosive, halogenide solutions, especially chlorides, require the greatest possible caution, even at low concentrations.
Lyes
Lyes
Although lyes are more caustic than acids, they are usually much less corrosive than acids on metallic materials. However, there are a few exceptional lyes that are extremely corrosive.
Organic Acids
Organic Acids
Organic acids are weak acids and their corrosiveness is usually limited. Nevertheless, there are exceptions where organic acids are very corrosive and this should not be underestimated.
Inorganic Acids
Inorganic Acids
Inorganic acids are important basic products in the chemical industry. They are very corrosive in most cases, so pumps that will move inorganic acids must be designed with great care.
Organic Solvents
Organic Solvents
Although the vast majority of organic solvents are non-corrosive, or are only slightly corrosive to metallic materials, there are still a few technical factors that must be considered when choosing a pump or material.
Industrial Wastewater
Industrial Wastewater
Unlike communal wastewater, wastewater generated by industrial companies is often very corrosive, so that great care must be exercised when choosing the materials that will move these liquids.
Washing and Absorption Liquids
Washing and Absorption Liquids
Many of the washing and absorber fluids used in industrial applications are very corrosive. The impact of this corrosion can often be counteracted only through the use of very high-value materials.
Viscous / Highly Viscous Liquids
Viscous / Highly Viscous Liquids
Progressing cavity pumps and peristaltic pumps are especially well-suited to pump viscous and highly viscous liquids.
Liquids with Suspended Solids
Liquids with Suspended Solids
Progressing cavity pumps and peristaltic pumps are designed for moving liquids with suspended solids.
Polyol, Isocyanates
Polyol, Isocyanates
Liquid starting products are needed for the production of many types of technical plastics. These starting materials are slightly corrosive or non-corrosive.