Chlorine is a basic raw material in the chemical and pharmaceutical industry. It is used for cleaning and disinfection as well as in an antiseptic capacity. The most widespread application of chlorine is in the manufacture of plastics, where one of the most familiar products is polyvinyl chloride (PVC). In chlorine processing, compressors are needed primarily for the preparation of industrial raw materials. Owing to the nature of the product, and also to the increase in pressure, the machines had to meet special criteria.