General catalog simplifies the selection process for a complete line of boiler and liquid level controls and flow switches. The 192-p publication contains convenient reference sections on a wide range of topics, including basic system operations, selection charts, conversions and formulas, basic wiring techniques, maintenance and replacement interval guidelines, installing flow switches, and installing and wiring controls for specific applications.

McDonnell & Miller

www.mcdonnellmiller.com

Circle 272

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