Seal-less, hydraulically-balanced diaphragm pumps based on Wanner's 'Hydra-Cell' design concept. Flows 0.5 l/min - 138 l/min. Max pressures 70bar - 100bar. Energy efficient. Compact. Low maintenance. Tolerate particles and handle chemicals and aggressive liquids, hot or cold. Positive displacement. Flow accurately proportional to pump speed. Choice of diaphragm and head materials. Very reliable. ATEX approved.