Material selection for concentrated hydrochloric acid metering pumps
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Has anyone been using a concentrated hydrochloric acid metering pump? At room temperature, with a hydrochloric acid concentration of 33% – what material is used? PVC? Hastelloy? PVDF? I see there are also ones made of plexiglass?
When selecting materials, corrosion resistance and strength should be taken into consideration; metering pumps made of PVDF or PTFE can be used, as these materials exhibit excellent corrosion resistance to hydrochloric acid. PVC is also an option, but its strength and corrosion resistance are inferior to those of the first two. Hastelloy is also highly corrosion-resistant, but it is more expensive. Acrylic is not recommended due to its insufficient corrosion resistance. .
You can contact well-known manufacturers of metering pumps directly; brands, both domestic and international, generally have products manufactured in China. They have experience in manufacturing high-concentration metering pumps, and their list of chemical resistance materials shows their knowledge and expertise in using corrosion-resistant materials.