Gorman-Rupp”s RAMPARTS air-driven diaphragm pump is application-proven up to 6 percent solids. The pump”s patent-pending integrated speed-control system is constructed with durable, RAMPARTS components for use in real-world applications. With its modular construction, it is both operator and maintenance friendly, allowing for in-place service, and/or field retrofit of either RAMPARTS or competitors’ pumps. The speed-control system is designed for intermittent or continuous duties, as well as variations in temperature, air pressure, or pump speed. The control system ensures a full displacement stroke every time. It also offers independent control of the suction and discharge strokes, allowing the pump to be tuned to the application.