McDonnell & Miller 93-7B Boiler Low Water Cut-Off/Pump Controller

McDonnell & Miller 93-7B Boiler Low Water Cut-Off/Pump Controller delivers dependable safety and control for boiler operations. This commercial-grade device pairs a low water cut-off with a pump controller, ensuring reliable protection in steam and hot-water systems.

Designed for harsh industrial environments, this unit uses mechanical actuation with a robust Series 7B switch. It supports an input supply rating of 120/240 VAC and 345 VA, with 1 inch threaded x 1 inch threaded port connections for easy integration. The assembly handles steam and water media and is rated to 150 PSI.

Key features for reliable boiler operation:

• 1" threaded x 1" threaded port connections
• Mechanical actuation with Series 7B switch
• Media: steam and water
• Pressure rating: 150 PSI
• Input: 120/240 VAC, 345 VA
• Commercial and industrial boiler service
• UL, CSA, FM listed

Ideal for commercial and industrial boiler rooms requiring precise water level control and reliable pump operation.