LPP-D dosing pumps from Flowrox are designed to ensure accurate dosing in all process conditions, as the pump discharge flow does not depend on positive suction pressure. These pumps involve positive displacement pumping, which minimizes backflow. Their rolling design compresses the hose half as many times as a conventional shoe-design pump. Reducing hose compression by half creates lower operating costs by extending the hose lifetime and creates the capability to pump full time by minimizing friction and heat. They can be used with a variety of diverse slurries and are suitable for dosing a wide range of abrasive, corrosive, viscous mediums such as lime, alum, sodium hypochlorite and ferric chloride. 410-636-2250; www.flowrox.com.