Description
The Bell & Gossett 112013 Airtrol Tank Fitting (ATF-24) is a precision-engineered hydronic accessory designed to work with 24″ expansion tanks in closed-loop heating systems. As a trusted component in the Bell & Gossett Airtrol line, this fitting plays a critical role in maintaining proper air separation and system pressure balance — helping to protect pumps, boilers, and other hydronic components from the damaging effects of entrained air.
Product Overview
Airtrol fittings are specifically designed to prevent waterlogged expansion tanks by maintaining an air cushion within the tank. The ATF-24 model is sized for use with 24″ expansion tanks and installs at the tank connection point to control the air-water interface, ensuring the tank functions as intended throughout the heating season.
Key Features
- Designed for use with 24″ Bell & Gossett expansion tanks
- Maintains proper air cushion within the expansion tank
- Prevents tank waterlogging for consistent system pressure control
- Engineered to Bell & Gossett’s exacting quality standards
- Supports reliable, long-term performance in closed-loop hydronic systems
- Direct OEM replacement for ATF-24 applications
Applications
- Residential and commercial hydronic heating systems
- Hot water boiler systems with compression-style expansion tanks
- Closed-loop systems requiring air and pressure management
Why Choose Bell & Gossett Airtrol Fittings?
Bell & Gossett has been a leader in hydronic system components for over a century. Their Airtrol fittings are a proven solution for maintaining system efficiency and equipment longevity. By keeping the expansion tank free of waterlogging, the ATF-24 helps your system operate at peak performance while reducing maintenance calls and premature component wear.







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