Description
Product Overview
The Xylem-McDonnell & Miller 67-LQHU (Part Number 149500) is a mechanical low water cut off designed specifically for steam boiler applications. Featuring an automatic reset mechanism, this control provides dependable protection by shutting down the burner whenever water drops below a safe operating level — helping prevent costly boiler damage and extending system life.
Key Features
- Automatic reset operation — restores normal burner function once safe water level is re-established
- Mechanical low water cut off design for proven, reliable steam boiler protection
- 3/4″ NPT connection for straightforward installation on standard boiler tappings
- 20 PSI maximum boiler pressure rating — suitable for low-pressure steam systems
- Manufactured by McDonnell & Miller, a trusted Xylem brand with decades of hydronic and steam control expertise
Specifications
- Part Number: 149500
- SKU: 67-LQHU
- Connection Size: 3/4″ NPT
- Maximum Boiler Pressure: 20 PSI
- Reset Type: Automatic
- Control Type: Mechanical Low Water Cut Off
- Application: Steam Boilers
Application
The 67-LQHU is engineered for residential and light commercial steam boiler systems where low-pressure steam is generated. It serves as a critical safety device, interrupting the burner circuit when water level falls below the minimum safe threshold and automatically resetting once proper water level is restored — minimizing downtime and manual intervention.
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