Mouvex®, a leading manufacturer of positive displacement pumps, says its Abaque Series peristaltic hose pumps have been designed to meet the challenging requirements of mining, thanks in part to a seal-free design that eliminates leaks and product contamination. It says these pumps “are ideal for handling anything from abrasive and aggressive fluids to shear-sensitive and viscous materials. These self-priming pumps can run in forward or reverse and offer suction-lift capabilities to 9 m, as well as the ability to run dry without adversely affecting performance. The Abaque pumps are available in ductile iron and stainless steel construction, allowing higher discharge pressure to 16 bar.The Abaque Series’ pumping action is achieved by the compression of a circular loop of elastomeric hose by two diametrically opposed rotating shoes. This rotational motion forces the fluid in the hose to move ahead of each shoe. When each shoe reaches the end of the loop, the reinforced hose immediately returns to its original shape, ensuring suction and priming. The housing is partially filled with lubricant, aiding the smooth running of the shoes on the hose. The inside of the hose and the hose inserts are the only pieces of equipment that come in contact with the pumped fluids, allowing aggressive and contaminated fluids to be pumped safely and efficiently.The hoses are available in natural rubber (ideal for use with diluted acids and alcohols), Buna-N (highly wear resistant to oily products), and EPDM (high chemical resistance when handling concentrated acids, alcohols and ketones). Abaque pumps are available in ten different sizes, with flow rates ranging from 0.26 to 1.283 litres/min and a choice of close-coupled or bare-shaft drive.