McDonnell & Miller

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.
Showing 7–12 of 26 results
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McDonnell & Miller 122800 Model AF1 – Snap Air Flow Switch
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McDonnell & Miller 126400 Model 21 – Water Feeder
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McDonnell & Miller 127200 Model 27W – Liquid Level Control
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McDonnell & Miller 142400 Model 63 – Low Water Cut-Off
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McDonnell & Miller 142600 Model 63-HD – Head Mechanism
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McDonnell & Miller 143100 Model 63-M – Low Water Cut-Off