About Us

In business since 1956, DEMA Engineering Company was born out of customer requests for a device to dilute chemicals accurately and automatically. During DEMA’s first year the “proportioner” was introduced to the institutional cleaning market. Large chemical companies approached DEMA to build various products that would allow them to correctly dilute their cleaning chemicals. Since the beginning DEMA has introduced thousands of different proportioner models, with the primary goal of offering our customers the most reliable, safest and accurate way of dispensing concentrated chemicals. In addition to our complete range of chemical dispensing equipment, DEMA has also designed and manufactured a line of solenoid valves, injectors, and other fluid control devices to meet many industrial applications.

DEMA is committed to the complete satisfaction of our customers throughout the world. As we grow, we continually increase our support structure to provide our customers with the best experience possible. Since our founding, DEMA has expanded facilities in Missouri, Pennsylvania, North Carolina, the Netherlands, and Australia. Sales Managers have also been added in Asia, Central America and South America to increase DEMA’s global footprint. All of our expansions have led to better service and satisfaction for our continually growing global customer base.