Description
The Xylem-McDonnell & Miller 339800 is an OEM replacement arm assembly designed specifically for the 25A Series low water cutoff controls (Model SA25-5). McDonnell & Miller, a trusted Xylem brand, has long been the industry standard for boiler protection and hydronic system controls, and this arm assembly ensures your 25A Series unit continues to operate with the precision and dependability it was engineered to deliver.
Product Overview
This arm assembly is a critical internal component of the 25A Series float-type low water cutoff. When the original arm assembly wears or becomes damaged, replacing it with a genuine OEM part restores the float mechanism’s proper range of motion and ensures accurate water level sensing — keeping your boiler protected from low-water conditions that can cause serious damage.
Key Features
- OEM replacement arm assembly for McDonnell & Miller 25A Series low water cutoffs
- Compatible with Model SA25-5
- Engineered to restore original float mechanism performance
- Manufactured to Xylem-McDonnell & Miller quality standards
- Supports reliable low water cutoff operation for steam and hot water boilers
- Direct drop-in replacement — no modifications required
Compatibility
- McDonnell & Miller 25A Series Low Water Cutoff Controls
- Model Number: SA25-5
Why Choose Genuine OEM Parts?
Using genuine Xylem-McDonnell & Miller replacement components ensures proper fit, function, and longevity. Non-OEM substitutes may compromise the accuracy of your low water cutoff, putting your boiler and system at risk. The 339800 Arm Assembly is the correct, manufacturer-specified part for restoring your 25A Series control to like-new performance.
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