Clarke Fire Protection Products sold its first diesel fire pump driver in 1964 as a regional distributor for GM Diesel. They began manufacturing their own UL/FM driver in 1980 and now market the largest line diesel fire pump drivers in the world.

Silco Fire & Security is family owned and managed fire safety services business, established in 1959 with offices in Cincinnati, Dayton, Columbus, Akron, and Cleveland. They provide a range of services, such as Fire Extinguisher Service & Inspection, Sprinkler Systems, Fire Pumps & Backflows, Fire Alarms & Detection Systems, Special Hazard Suppression Systems, Exit & Emergency Lighting, Restaurant Suppression Systems & Security Systems.