Description
The Bell & Gossett 116303 is a heavy-duty pressurized diaphragm expansion tank engineered for demanding hydronic heating and cooling systems. Designated as the D-100 model, this tank is built to absorb system pressure fluctuations, protect equipment, and extend the service life of your hydronic installation.
Key Features
- 60-gallon total tank volume for large-capacity hydronic systems
- 48.5-gallon acceptance volume to efficiently manage system expansion
- Carbon steel shell construction for exceptional strength and durability
- Heavy-duty butyl rubber bladder separates system fluid from the air charge, preventing waterlogging
- 125 PSI maximum working pressure rating
- 240°F maximum temperature rating for high-temperature hydronic applications
- Pressurized design maintains consistent system pressure and reduces pump cycling
Technical Specifications
- Model: D-100
- SKU: 116303
- Tank Volume: 60 Gallons
- Acceptance Volume: 48.5 Gallons
- Shell Material: Carbon Steel
- Bladder Material: Heavy-Duty Butyl Rubber
- Maximum Working Pressure: 125 PSI
- Maximum Temperature: 240°F
Applications
- Commercial and industrial hydronic heating systems
- Closed-loop chilled water systems
- High-temperature hot water (HTHW) systems
- Large-scale boiler and heat exchanger installations
Trust Bell & Gossett — an industry leader in hydronic system components — to deliver reliable pressure management and system protection. The 116303 D-100 expansion tank is the professional’s choice for commercial-grade hydronic installations that demand performance and longevity.







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