Description
Product Overview
The Xylem-McDonnell & Miller Model 67 is a reliable, mechanically operated low water cut off (LWCO) designed specifically for steam boilers. Featuring an automatic reset mechanism and quick hook-up fittings for simplified installation, this control provides essential boiler protection by shutting down burner operation whenever water drops below a safe operating level — helping prevent costly boiler damage and unsafe conditions.
Key Features
- Automatic reset operation — restores burner function once safe water level is re-established
- 3/4″ NPT connection for straightforward integration into standard steam boiler piping
- 20 PSI maximum boiler pressure rating suitable for residential and light commercial steam systems
- Mechanical low water cut off design — no electronic components to fail
- Quick hook-up fittings included for faster, easier installation
- Trusted McDonnell & Miller engineering backed by Xylem’s global expertise
- Part Number: 149400
Application
The Model 67 is engineered for use on steam boilers where low water protection is required. The mechanical float-based design provides dependable cut off performance, making it ideal for replacement or new installation on residential and light commercial steam heating systems. The included quick hook-up fittings reduce labor time and ensure a secure, leak-free connection.
Specifications
- Connection Size: 3/4″ NPT
- Maximum Boiler Pressure: 20 PSI
- Reset Type: Automatic
- Operation Type: Mechanical
- Application: Steam Boilers
- Includes: Quick Hook-Up Fittings
- Manufacturer Part Number: 149400
