Wanner Hydra-Cell Pro® positive displacement diaphragm pumps feature a seal-less pumping chamber so there are no seals, packing or cups to leak or replace. The seal-less design and check valves enable Hydra-Cell Pro to handle abrasives and particulates that would damage other types of pumps. In addition, Hydra-Cell Pro can run dry indefinitely without damage to the pump. The multiple-diaphragm design provides virtually pulse-less, linear flow without the need for expensive pulsation dampeners.