Hydra-Cell positive displacement diaphragm pumps feature a seal-less pumping chamber. The seal-less design and check valves enable Hydra-Cell to handle abrasives and particulates that would damage other types of pumps. Hydra-Cell can run dry indefinitely without damage to the pump. The multiple-diaphragm design of Hydra-Cell provides virtually pulse-less, linear flow without the need for expensive pulsation dampeners.