Description
McDonnell & Miller 140100 61 Low Water Cut-Off – Float Type for Steam Boilers
Reliable Safety Device for Low Pressure Steam Boilers up to 20 PSI
The McDonnell & Miller 61 Low Water Cut-Off is engineered for residential and commercial low-pressure steam boilers, delivering dependable water level control and boiler protection. Designed to fit boilers of any steaming capacity, this float-style low water cut-off features dual precision switches to effectively manage both the low water cut-off function and an alarm or electric water feeder.
With an automatic reset and packless bellows design, the 61 model ensures smooth operation and easy installation with an adjustable BX outlet. It requires 1" NPT equalizing pipes and a blow down valve for proper setup. The device is built to handle steam pressures up to 20 PSI, making it a trusted choice for boiler safety.
Key Features:
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Float-type low water cut-off for steam boilers up to 20 PSI
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Dual precision switches for low water cut-off and alarm or feeder control
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Automatic reset with packless bellows for enhanced durability
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Adjustable BX outlet simplifies installation
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Compatible with boilers of all steaming capacities
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Requires 1" NPT equalizing pipes and blow down valve
Specifications
| Attribute | Details |
|---|---|
| Model | 140100 61 |
| Type | Float-Style Low Water Cut-Off |
| Application | Steam Boilers |
| Max Pressure (PSI) | 20 (Steam) |
| Reset Type | Automatic |
| Switches | Dual Precision Switches |
| Electrical Ratings (ALR) | 44.4 A @ 120 VAC, 22.2 A @ 240 VAC |
| Electrical Ratings (AFL) | 7.4 A @ 120 VAC, 3.7 A @ 240 VAC |
| Pilot Duty Rating | 125 VA |
| Connection Type | Threaded |
| Thread Size | 1" NPT |
| Dimensions (Depth x Length x Width) | 9-15/16" x 6-1/2" x 5-1/8" |
