Description
Overview
The Armstrong International AX-80 is a hydronic expansion tank engineered to absorb pressure fluctuations and protect closed-loop heating and cooling systems from damaging overpressure conditions. Rated at 125 PSI, this tank is a reliable solution for commercial and residential hydronic applications where system pressure management is critical.
Key Features
- Maximum working pressure: 125 PSI
- Designed for closed-loop hydronic heating and cooling systems
- Absorbs thermal expansion to protect pipes, valves, and equipment
- Durable construction for long-term, low-maintenance service
- Armstrong International quality — trusted by HVAC professionals worldwide
Application
The AX-80 expansion tank is ideal for use in hydronic heating systems, chilled water systems, and other closed-loop piping applications. By accommodating the volume change of water as it heats and cools, the tank prevents excessive pressure buildup that can lead to system failures, relief valve discharge, and premature component wear.
Why Choose Armstrong International
Armstrong International has a long-standing reputation for engineering high-quality fluid management products. The AX-80 reflects that commitment — delivering dependable pressure control and system protection in a robust, professionally designed package.
Specifications
- Brand: Armstrong International
- Model: AX-80
- Maximum Working Pressure: 125 PSI
- Application: Closed-loop hydronic systems







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