McDonnell & Miller 193-7B Boiler Low Water Cut-Off/Pump Controller

The McDonnell & Miller 193-7B Boiler Low Water Cut-Off/Pump Controller delivers reliable protection for your boiler system, combining a low-water cut-off with a versatile pump controller in a rugged mechanical actuation design.

Designed for commercial and industrial boiler setups, this unit supports 1 inch threaded port connections and comes with a Series 7B switch, meeting UL, CSA, and FM standards for safety and performance. Ideal for retrofits and new installations, it integrates seamlessly with existing boiler control schemes.

With a compact footprint of 13 inches in length and 20-1/2 inches in height, it handles steam and water media at up to 150 PSI. The input supply is 120/240 VAC (345 VA), making it compatible with common plant electrical systems and fits standard 120/240V power distribution.

Built to endure demanding industrial environments, it delivers reliable operation under varying steam and water conditions, with a robust 150 PSI rating and UL/CSA/FM certification.

• 1" threaded port connections (inlet/outlet)
• Mechanical actuation
• 13" L x 20-1/2" H dimensions
• 120/240 VAC, 345 VA input
• 150 PSI pressure rating
• Media: steam and water
• Includes Series 7B switch
• UL, CSA, FM listed
• Commercial and industrial application