Description
The Bell & Gossett 1BN329 (Model HFT-90) is a high-performance hydronic heating diaphragm expansion tank engineered to maintain proper system pressure and protect hydronic heating systems from pressure fluctuations. Factory precharged and ready for installation, this tank delivers reliable, long-term performance in residential and light commercial hydronic applications.
Key Features
- 14.0-gallon total tank volume for effective system pressure management
- Factory precharged to 12 PSI for immediate, hassle-free installation
- 1/2″ Male NPT system connection for easy integration into existing piping
- 100 PSI maximum working pressure for dependable performance
- 240°F maximum operating temperature — suitable for high-temperature hydronic systems
- Durable diaphragm design separates system water from the air charge, preventing waterlogging
- Non-ASME construction
Specifications
- Model: HFT-90
- SKU: 1BN329
- Tank Volume: 14.0 Gallons
- System Connection: 1/2″ Male NPT
- Maximum Working Pressure: 100 PSI
- Maximum Operating Temperature: 240°F
- Factory Precharge Pressure: 12 PSI
- Construction: Non-ASME
- Application: Hydronic Heating
Why Choose the Bell & Gossett HFT-90?
Bell & Gossett has been a trusted name in hydronic heating for over a century. The HFT-90 expansion tank is designed to absorb the increased water volume that occurs as a hydronic system heats up, preventing excessive pressure buildup that could damage boilers, pumps, and piping. The internal diaphragm keeps the air charge separated from system water, ensuring the precharge pressure remains stable over the life of the tank. With its 1/2″ MNPT connection and compact design, the HFT-90 installs quickly and fits easily into tight mechanical rooms.
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