Description
The Bell & Gossett 1BN331 (Model HFT-40V) is a heavy-duty diaphragm-style expansion tank engineered for residential and light commercial hydronic heating systems. Factory precharged to 12 PSI and ready for immediate installation, this tank absorbs the pressure fluctuations caused by thermal expansion of system water — protecting boilers, pumps, and piping from damaging overpressure conditions.
With a 20.0-gallon tank volume and a 1″ Female NPT system connection, the HFT-40V is well suited for medium-to-large hydronic heating systems. Its non-ASME construction keeps installation straightforward while delivering reliable, long-term performance in closed-loop heating applications.
Key Specifications
- Model: HFT-40V
- SKU: 1BN331
- Tank Volume: 20.0 Gallons
- System Connection: 1″ Female NPT (FNPT)
- Factory Precharge Pressure: 12 PSI
- Maximum Working Pressure: 100 PSI
- Maximum Operating Temperature: 240°F
- Construction: Non-ASME
- Tank Type: Diaphragm Expansion Tank
- Application: Hydronic Heating Systems
Features & Benefits
- Factory precharged to 12 PSI for fast, hassle-free installation
- Diaphragm design separates system water from the air charge, preventing waterlogging and maintaining consistent precharge pressure
- 1″ FNPT connection for easy integration into standard hydronic piping
- Rated to 100 PSI maximum working pressure for safe operation in pressurized closed-loop systems
- Handles system water temperatures up to 240°F
- 20.0-gallon capacity accommodates larger hydronic heating systems
- Durable construction from Bell & Gossett, a trusted name in hydronic system components
Application
The Bell & Gossett HFT-40V is designed for use in closed-loop hydronic heating systems where thermal expansion of the system fluid must be safely managed. It is ideal for boiler-based heating systems in residential and light commercial settings, working in conjunction with circulator pumps, zone valves, and pressure relief valves to maintain system integrity and efficiency.
Reviews
There are no reviews yet.