Bell & Gossett 1BN329 - HFT-90 Hydronic Expansion Tank

Efficiently manage thermal expansion in your hydronic heating or potable water systems with the 1BN329 Bell & Gossett HFT-90 expansion tank. Designed for long-term reliability, this high-performance tank helps prevent pressure fluctuations that can cause unnecessary stress on system components, ensuring your boiler or water heater operates at peak efficiency.

This diaphragm-style expansion tank features a heavy-duty steel construction with an internal flexible membrane that separates the system water from the air cushion. As water heats and expands, the diaphragm flexes against the pressurized air pocket, effectively absorbing the volumetric change and maintaining consistent system pressure to protect against relief valve discharge.

Key System Performance Baselines:

• Durable Construction: Heavy-gauge steel shell designed to withstand rigorous hydronic operating pressures.
• Pressure Management: Precision-engineered diaphragm prevents system waterlogging and unnecessary air-related damage.
• Seamless Integration: Compact, space-saving design ensures straightforward installation in residential and light commercial mechanical rooms.

⚠️ Application Profile: Ideal for residential hydronic heating systems, radiant floor heating loops, and domestic hot water potable water applications where thermal expansion control is required to protect plumbing and heating infrastructure.

📋 Procurement & Shipping Notice

• LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
• Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?

👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.