Description
Overview
The McDonnell & Miller 51-HD Mechanical Water Feeder (Part Number 134900) is a reliable, time-tested solution for automatically maintaining proper water levels in low pressure steam and hot water boilers. Supplied as the head mechanism only, the 51-HD is ideal for replacement installations or system upgrades where the existing body is already in place, reducing installation time and cost.
Key Features
- Mechanical water feeder designed for low pressure steam and hot water boiler applications
- 35 PSI maximum vessel pressure rating for safe, dependable operation
- Head mechanism only (Part Number 134900) — compatible with existing 51-series body installations
- Automatically feeds water to maintain proper boiler water level, protecting against low-water damage
- Rugged mechanical design with no electrical components required for basic feed operation
- Trusted McDonnell & Miller (Xylem) engineering — an industry standard in boiler water management
Specifications
- Model: 51-HD
- Part Number: 134900
- Application: Low pressure steam and hot water boilers
- Maximum Vessel Pressure: 35 PSI
- Configuration: Head mechanism only
- Brand: McDonnell & Miller (Xylem)
Application
The 51-HD is engineered for use on residential and light commercial low pressure steam and hot water heating boilers. By automatically replenishing boiler water as needed, it helps prevent costly boiler damage from low-water conditions and keeps heating systems running efficiently. The head-only configuration makes it a practical, cost-effective replacement part for existing 51-series installations.
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