Watts B911T Boiler Combination Fill Valve and Backflow Preventer

Watts B911T Boiler Combination Fill Valve and Backflow Preventer is a reliable, code-compliant solution for automatic boiler fill and backflow prevention in hydronic heating systems.

Featuring a bronze body, 1/2 inch nominal size, and female threaded union x female threaded connections, this unit installs easily into standard piping. It is rated for up to 212°F and 100 PSI, ensuring robust performance in heating systems under varying demand.

Use this integrated fill valve and backflow preventer to maintain proper boiler water levels while protecting potable water supplies from contamination.

Designed for ease of installation, it combines the fill valve and backflow preventer in a single compact unit, minimizing the number of fittings and potential leak points. The bronze body offers durability in heated water environments, while the female thread connections ensure compatibility with common piping. This design simplifies maintenance and reduces downtime, helping keep your heating system reliable year-round.

Key features include:

• Type: Combination Fill Valve and Backflow Preventer
• End connections: Female Threaded Union x Female Threaded
• End-to-end distance: 8-1/2 inches
• Material: Bronze body
• Temperature rating: 212°F
• Pressure rating: 100 PSI
• Applications: Commercial and residential hydronic heating systems