Description
Xylem McDonnell & Miller 347900 Bellows Assembly and Gaskets for 150 Series (SA150-106R)
Keep your boiler’s low-water cutoff operating at peak performance with the Xylem McDonnell & Miller 347900 Bellows Assembly and Gaskets. Engineered specifically for the 150 Series low-water cutoff controls, this genuine OEM replacement kit delivers the precise fit and dependable sealing integrity your system demands. Whether you’re performing scheduled maintenance or restoring a unit to proper operation, this assembly ensures your boiler protection remains uncompromised.
Product Overview
The McDonnell & Miller 150 Series is a trusted name in steam boiler low-water cutoff protection. The bellows assembly is a critical internal component responsible for sensing water level changes and triggering the cutoff mechanism. Over time, bellows can fatigue or gaskets can degrade, leading to inaccurate water level detection. Replacing these components with the factory-correct 347900 kit restores the control’s sensing accuracy and extends its service life.
Key Features
- Genuine OEM bellows assembly and gaskets designed for the McDonnell & Miller 150 Series low-water cutoffs
- Model number SA150-106R — direct factory replacement for precise fitment
- Restores accurate water level sensing and reliable boiler shutoff protection
- Includes all necessary gaskets for a complete, leak-free reinstallation
- Manufactured to Xylem’s quality standards for long-lasting performance
- Ideal for scheduled preventive maintenance or emergency service restoration
Application
- Compatible with McDonnell & Miller 150 Series low-water cutoff controls
- Designed for use on steam boilers requiring low-water protection
- Suitable for residential and light commercial hydronic and steam heating systems
Why Choose Genuine OEM Parts?
Using authentic McDonnell & Miller replacement components ensures your low-water cutoff performs exactly as designed. Aftermarket substitutes may not meet the dimensional tolerances or material specifications required for safe, reliable boiler operation. Trust the 347900 bellows assembly and gasket kit to maintain the integrity of your 150 Series control and the safety of the boiler system it protects.









