Xylem 341900 Large Bellows Assembly Steam Heating

Product Description

The XYLEM 341900 is a large bellows assembly designed for use in steam heating systems within commercial and residential HVAC applications. The bellows assembly accommodates thermal expansion and pressure fluctuations inherent to steam systems, allowing controlled movement that reduces mechanical stress on connected components. By flexing with system changes, it helps protect boiler piping and fittings from fatigue caused by repeated expansion and contraction cycles. Licensed HVAC technicians and steam heating specialists typically install this assembly as part of routine system maintenance or component replacement. The unit weighs 1.43 pounds and is also referenced by the designation SA47-104.

This assembly is suited for steam boiler and heating system installations where thermal movement and pressure variation must be managed at connection points. It is typically found in hot-water or steam distribution piping assemblies where flexibility is required to maintain long-term system integrity. Steam heating applications in both light commercial and residential boiler systems represent its primary install environment. Installers working on older steam distribution networks will find this a direct-fit replacement for worn or failed bellows components.

Key Features

• Large bellows construction accommodates thermal expansion and contraction in steam systems
• Acts as a protective mechanism against pressure-induced stress on piping and system components
• Referenced under designation SA47-104 for cross-reference identification
• Compact and lightweight at 1.43 pounds for straightforward handling during installation
• OEM part number 341900 ensures direct replacement fitment

Compatibility

Designed as an OEM-style replacement bellows assembly for steam heating and boiler systems where a large bellows component is specified.

Installation Notes

Installation should be performed by a licensed HVAC technician or steam systems specialist familiar with low-pressure steam boiler service. Shut down the boiler and allow the system to fully depressurize and cool before removing or installing any bellows assembly. Inspect surrounding piping and fittings for wear or corrosion during the service call. Follow applicable mechanical codes and the boiler manufacturer guidelines for proper component orientation and connection integrity.

Technical Specifications

• Weight: 1.43 pounds
• OEM Part Number: 341900
• Product Designation: SA47-104

Standard Information

• Brand: XYLEM
• Manufacturer Part Number: 341900