Description
The Bell & Gossett 112026 Airtrol Fitting (ATF-20) is a precision-engineered hydronic accessory designed specifically for use with 20″ expansion tanks in hot water heating systems. As a trusted component in Bell & Gossett’s extensive line of hydronic solutions, this Airtrol fitting plays a critical role in maintaining proper air-water separation within the expansion tank, preventing waterlogging and ensuring long-term system performance.
Airtrol fittings work by directing system water into the bottom of the expansion tank while trapping an air cushion at the top. This air cushion absorbs pressure fluctuations throughout the heating system, protecting components from excessive pressure buildup and maintaining the correct system operating pressure. Without a properly functioning Airtrol fitting, expansion tanks can become waterlogged — losing their ability to buffer pressure changes and leading to frequent pressure relief valve discharge or system inefficiency.
Key Features
- Designed specifically for Bell & Gossett 20″ hydronic expansion tanks
- Maintains proper air cushion within the expansion tank to prevent waterlogging
- Directs system water flow to preserve the air-water interface inside the tank
- Helps protect pressure relief valves and other system components from overpressure
- Durable construction built to withstand the demands of closed-loop hydronic heating systems
- Direct OEM replacement fitting for compatible Bell & Gossett expansion tanks
Application
- Hot water hydronic heating systems
- Residential and light commercial boiler systems
- Closed-loop heating systems utilizing Bell & Gossett 20″ expansion tanks
Product Specifications
- Brand: Bell & Gossett
- Part Number: 112026
- Model: ATF-20
- Compatible Tank Size: 20″ Expansion Tank
- Application: Hydronic Expansion Tank Airtrol Fitting
Trust Bell & Gossett — a leader in hydronic heating and fluid handling for over a century — to deliver reliable, high-quality components that keep your heating system operating at peak efficiency. The 112026 ATF-20 Airtrol Fitting is the correct OEM replacement to restore or maintain proper expansion tank function in your hydronic system.
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