Description
The Xylem-McDonnell & Miller 94-7B is a heavy-duty combination low water cut off and pump controller engineered for reliable protection and automatic pump management on steam boiler systems. Featuring a built-in potentiometer switch, this unit delivers precise water level sensing and control in a single, compact assembly — reducing installation complexity and improving system reliability.
Key Features
- Combination low water cut off and pump controller in one unit
- Potentiometer switch for accurate, adjustable water level sensing
- Rated for steam boilers with a maximum working pressure of 250 PSI
- Automatically cuts off burner operation when water drops to an unsafe level
- Controls feed pump to maintain proper boiler water level
- Durable float-operated mechanism for dependable long-term performance
- Part Number: 166300
Application
The 94-7B is designed for use on steam heating and process boilers where both low water protection and automatic pump control are required. By combining two critical safety and operational functions into one device, it simplifies piping, reduces potential leak points, and lowers overall installation costs. The potentiometer switch allows for field adjustment of the switching differential, making it adaptable to a wide range of boiler configurations.
Why McDonnell & Miller
McDonnell & Miller, a brand under Xylem, has been a trusted name in boiler water level controls for over a century. Their low water cutoffs and pump controllers are specified by engineers and relied upon by mechanical contractors across commercial and industrial steam systems worldwide.
Specifications
- Model: 94-7B
- Part Number: 166300
- Type: Combination Low Water Cut Off / Pump Controller
- Switch Type: Potentiometer
- Maximum Working Pressure: 250 PSI
- Application: Steam Boilers
- Brand: Xylem-McDonnell & Miller
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