The Clark-Reliance Corporation is a privately held family business that produces a variety of measuring, control, alarm, separation, and energy conservation equipment for the power and process industries. As a single-source, full supplier of boiler and fluid control products and services to customers that include power generation, petroleum refining, chemical processing, pulp and paper, and food processing, The Corporation has positioned itself as the largest level indicator supplier in the world. A major competitor in both the domestic and international marketplaces, the Corporation has 140 representatives including 50 international sales representatives in over 40 countries. The factory and Corporate Offices are located in Strongsville, Ohio, with manufacturing locations in Stafford, Texas and subsidiary offices in Europe .

Certified ISO-9001 in 1992, The Clark-Reliance Corporation is among a select group of companies with a firm commitment to maintaining high-quality products and services. The Company is a leader in automated material handling, flexible manufacturing, and rigorous quality control. Mr. Dennis L. Pesek, President and CEO, attributes its growth to an aggressive sales force, vigorous product development and redesign, and advanced manufacturing techniques. "We are the only company to offer the complete range from specifying engineering, architectural engineering, user support, plus maintenance repair and overhaul seminars and service."

The Clark-Reliance Corporation is dedicated to supplying the largest and broadest product line in the instrumentation industry as a single source for all types of level measurement and control.

Sight Flow Indicators

Manufacturers of Sight Flow Products for different pressure and temperature combinations in process and manufacturing industries.  

Process Gages

Manufacturers of Flat Glass Level Gauges, Magnetic Level Gages with point level switches or level Transmitters, Tubular Glass Gauges, Illuminators and Gage Valves .

Level Transmitters and Switches

Manufacturers of level switches (capacitance, non-contact ultra-sonic, mechanical) and level transmitters.

Boiler Level Instrumentation

Manufacturers of boiler gages, columns, alarms with remote level indication and control.