Extrol expansion tanks accept expanded fluid in closed-loop hydronic systems to control pressure build-up, improve comfort and help reduce energy costs. Nearly seven decades after inventing the first diaphragm expansion tank, Amtrol line-up now includes specialty models engineered for modern, high-efficiency systems. None of it would have been possible without Extrol The One That Started It All.
- Strongest tank design featuring deep drawn steel and multi-dome construction
- Projection welded air stem to help eliminate leaks
- Patent-pending InSight service indicator cap
- With 1/2 in MNPT System Connection
Expansion Tank Extrol Hydronic 2 Gallon 100 Pounds per Square Inch Gauge 1/2″ MNPT 15 for Closed Hydronic Heating Radiant and Chilled Water Systems