Profile: Robert B. Hill Co. designs and manufactures industrial reverse osmosis systems, water softeners, iron filtration & many other types of equipments. Our reverse osmosis systems are used in many applications such as municipal drinking water, boiler feed water, semiconductor manufacturing, industrial manufacturing and food/beverage processes. Our deionizers fall into two different categories. The first category is exchange tanks. The exchange tanks typically have a monitor light. Exchange tanks are typically for use in smaller applications that do not require a tremendous amount of water on a daily basis. They also are typically used on lower flow applications. The second category is a complete DI system. A complete DI system automatically regenerates based on water usage. The system pulls caustic and acid chemicals from chemical tanks.