• The all-new McDonnell & Miller RB-24E low water cut-off offers several new features:
• Brass threads provide a metal-to-metal seal that ensures a leak-free installation.
• Integrated wrench flats enable secure installation without damage to the housing.
• McDonnell & Miller's patented self-cleaning probe minimizes scale build-up and extends the recommended cleaning interval to 5 years.
• "Plug & Play" wiring harnesses are available for most residential gas-burning boilers.
• Designed, built and tested at ITT's production facility in Morton Grove, IL USA.

• Brochure

  • Brochure MM-838C

• Flyer

  • “Good Dog” Ad

• General Catalog

  • RB-24E

• Installation and Operation Manual

  • RB-24E – A/L/S LWCO w/harness (MM-277E)
  • UWH – RB-24 Wiring Harness (MM-274C)
  • RB-24E LWCO (MM-228J)

• Additional Product Images

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McDonnell & Miller

McDonnell & Miller is a leader in engineering and manufacturing boiler controls, liquid level controls, low-water cutoffs, and flow switches for steam and hot water boilers in industrial, commercial, and building trades applications.

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