Description
The Xylem-McDonnell & Miller 94-7B-HD is a professional-grade combination low water cut off and pump controller engineered for reliable protection and automatic pump management on steam boiler systems. Supplied as the head mechanism only (Part Number 166400), this unit features a potentiometer switch for precise, adjustable control and is rated for steam boiler applications with a maximum pressure of 250 PSI.
Product Overview
Designed for demanding commercial and industrial steam boiler installations, the 94-7B-HD combines two critical boiler safety and control functions into a single, compact head mechanism. The low water cut off function automatically shuts down the burner when water drops below a safe operating level, protecting the boiler from potentially catastrophic dry-fire conditions. The integrated pump controller simultaneously manages the feed water pump to maintain proper water levels during normal operation.
Key Features
- Combination low water cut off and pump controller in one unit
- Potentiometer switch for adjustable, precise water level control
- Rated for steam boiler applications up to 250 PSI maximum pressure
- Head mechanism only — mounts to existing boiler tapping or McDonnell & Miller float chamber
- Part Number: 166400
- Trusted Xylem-McDonnell & Miller quality and engineering
Applications
- Commercial and industrial steam boiler systems
- High-pressure steam heating applications up to 250 PSI
- Replacement or upgrade of existing low water cut off / pump controller head mechanisms
Specifications
- SKU: 94-7B-HD
- Part Number: 166400
- Maximum Pressure: 250 PSI
- Switch Type: Potentiometer
- Function: Combination Low Water Cut Off and Pump Controller
- Supply: Head Mechanism Only
- Brand: Xylem-McDonnell & Miller
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