McDonnell & Miller 149400 67 Mechanical Low Water Cut Off
McDonnell & Miller 149400 67 Mechanical Low Water Cut Off
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Apply for Trade Account & Terms →| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number | 149400 |
| Model Designation | 67 |
Ensure the longevity and safety of your steam boiler system with the McDonnell & Miller 149400, a high-performance Model 67 mechanical low water cut-off. Designed to provide dependable protection against dry firing, this essential safety control monitors water levels and automatically shuts down the burner circuit if the level drops below a critical threshold.
This device utilizes a float-actuated mechanical design that is proven to withstand the rigorous demands of commercial and residential steam heating environments. The internal switch mechanism ensures reliable interruption of power, preventing costly boiler damage and maintaining optimal system performance through simple, gravity-fed operation.
Key System Performance Baselines:
- Burner Safety: Reliable shut-off during low water events to prevent boiler dry-firing.
- Rugged Construction: Engineered for durability in high-pressure and high-temperature steam boiler applications.
- Fast Response: Mechanical float action provides an immediate signal to system controls.
- Easy Maintenance: Designed for straightforward inspection and component accessibility.
⚠️ Application Profile: Ideal for steam boilers requiring mandatory low-water fuel cut-off protection, including retrofits, boiler room safety upgrades, and replacement of older mechanical float controls.
