Clark''s new Debem Series Air Operated Diaphragm Pumps are designed for the chemical industry''s most demanding applications. Capable of transferring liquids with very high apparent viscosity (up to 50,000 cps at 20 degrees C), even if containing suspended solids, these pumps feature self-priming dry capacity, fine tuning of speed without pressure loss, and the possibility of dry operation without suffering damage. Clark''s Debem Series Diaphragm Pumps provide flow rates of 30 to 900 l/min (7.9 to 238 GPM) and are available in models featuring plastic or metal diaphragms. Series B & Series M Plastic Diaphragm Pumps are ideal for use with highly aggressive liquids and acids, whereas Series B & Series M Metal Diaphragm Pumps are designed for use with paints or solvent-based liquids. If space is at a premium, Clark''s Debem Series CU Air Operated Diaphragm Pumps provide a reduced footprint and the ability to be close-mounted. CU Air Operated Diaphragm Pumps provide flow rates of 5 to 17 l/min (1.3 to 4.5 GPM).