Amtrol- Extrol Expansion Tanks

EXTROL^®
Hydronic Expansion Tanks

AMTROL designed and patented the first EXTROL expansion tank in 1954, redefining hydronic heating systems. For five decades our unique, pre-pressurized, diaphragm design EXTROL has been the world's leading expansion tank. EXTROL was designed to control system pressure and help reduce energy consumption of heating and chilled water operations.

Market leader since 1954
Unique diaphragm design will not stretch or fold
Maintains a closed system for best efficiency and longevity
In-line and floor-mounted models for any application

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