About Mcdonnell & Miller
McDonnell & Miller is a leader in engineering and manufacturing boiler and liquid level controls, low-water cutoffs, and flow switches for steam and hot water boilers in industrial, commercial and building applications. After several acquisitions they continue the line of boiler controls, liquid level controls and flow switches. Of course with the required certifications such as ISO 9001 and ISO 14001.
McDonnell & Miller products are used for demanding applications in the oil and gas industry where high accuracy is required. Pneumatic valves or relays valves can be used in hazardous and non-hazardous process systems. The range of McDonnell & Miller includes several products for the petrochemical and process industries. McDonnell & Miller specializes particularly in Boiler Controls and power switches.
McDonnell & Miller Products
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Boiler Controls
McDonnell & Miller Low Water cut-offs are specially designed to protect hot water boilers from the hazards of a low water condition. In operation they will interrupt the electrical current to the firing device, if the water in the system drops below the boiler manufacturer’s minimum safe water level.
Flow Switches
The flow of liquids in pipelines plays an important role in industry and commerce. Under most circumstances it is essential to know whether or not there is a flow in a pipeline, and to act upon that knowledge. That is the reason for, and the function of, McDonnell & Miller Flow Switches.