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

For Features, Specifications & Models See Brochure.

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For more information, contact info@amtrol.com