Gear pump for hydrochloric acid in a CIP application

Hydrochloric acid is used in various pharmaceutical processes as an excipient or reagent. One example is the production of medicines, where hydrochloric acid is used to adjust the pH value. It can also be used in the synthesis of active ingredients or in the purification of raw materials. Another example is the use of hydrochloric acid as a disinfectant in cleaning and sterilisation processes in the pharmaceutical industry. In pharmaceutical production plants for biotechnologically produced products such as food, feed, medicines or other technical applications, the pipes and product-contact plant components have to be cleaned at regular intervals. As a rule this is done with pumps specially used for this area, which have to pump the cleaning agent, acids and alkalis (cleaning and neutralising). This process is called CIP “Cleaning In Place”. Explosive atmospheres often exist in pharmaceutical plants. Difficult requirements are therefore often placed on the pump, such as ensuring chemical resistance to the acids and alkalis used, ATEX design, and the wetted parts must be FDA-compliant so as not to contaminate the end products.

Pumps used

• TEF-MAG® – leak-free, magnetic-drive, chemical-resistant gear pumps made entirely of non-metallic materials in close-coupled design. All wetted parts are made of FDA-compliant materials. Design according to ATEX 2014/34/EU, Ex II2G and DIN EN ISO 80079-36:2016, Ex h IIC Tx(65°C) Gb.

The patented TEF-MAG® gear pump from MARCH PUMPEN combines the good metering capability of rotary positive displacement pumps, chemical resistance through the use of entirely non-metallic materials, and leak-free operation through the use of magnetic coupling technology. The wetted parts can all be made of electrically conductive and FDA-compliant materials.

MARCH PUMPEN pays attention not only to the chemical resistance of the wetted parts. Components that are exposed to the often chemically aggressive atmosphere are also specially selected or treated. The pump lantern, for example, is made of high-quality EN-GJS-400-15 and wet-painted throughout to corrosion protection class C3 to C5 high. The drive motors are also specially designed for the harsh atmosphere. A wide range of options is possible for this, such as the VIK design, special wet paint finishes, stainless steel screws, shaft and nameplates, or even coating and treating the winding packages or the inner casing.

Enquiry data / process data

Pump type used / wetted materials

TEF-MAG® 201, TEF-MAG® 1501, TEF-MAG® 3501