Description
The Xylem-McDonnell & Miller 247 Mechanical Water Feeder (Part Number 133700) is a reliable, float-operated water feeder engineered to automatically maintain safe and consistent water levels in both steam and hot water boiler systems. Designed for cold water feed applications, this mechanical feeder provides dependable low-maintenance performance without the need for electrical power, making it an ideal solution for residential and light commercial hydronic heating systems.
Key Features
- Mechanical float-operated design automatically maintains proper boiler water levels
- Compatible with both steam and hot water boiler systems
- Cold water feed configuration for straightforward installation
- Operates without electrical power for reliable, fail-safe performance
- Durable construction built to withstand the demands of boiler system environments
- Helps prevent low-water conditions that can damage boilers and heating equipment
- Part Number: 133700
Application
The McDonnell & Miller 247 is suited for installation on residential and light commercial steam or hot water boilers where automatic water makeup is required. The mechanical float mechanism responds to dropping water levels and opens the feed valve to restore water to the proper operating level, protecting the boiler from potentially damaging dry-fire conditions.
Why Choose McDonnell & Miller
McDonnell & Miller, a trusted Xylem brand, has been a leading manufacturer of boiler controls and water feeders for over a century. The 247 continues that legacy of quality and dependability, offering HVAC professionals and building owners a proven solution for boiler water level management.







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