The new product selection tool provides everything you need to specify, sell and install Amtrol products. Resources are available in printed form, online and through the Amtrol app. We’ll help you get the job done right.

Amtrol Products are made at our ISO registered facilities by American workers dedicated to producing the highest quality expansion tanks in the world.

Amtrol invented the first pre-pressurized well tank over 60 years ago as a better solution to traditional air-over-water tanks. This revolutionary product featured an innovative design that uses a hoop ring and groove to lock the diaphragm, liner and shell together.

Amtrol invented the thermal expansion tank to absorb expanded water in closed, hot water systems and protect the water heater.

Therm-X-Trol expansion tanks are designed to control pressure in commercial closed, potable hot water systems. Available in diaphragm, partial acceptance bladder and full acceptance bladder designs, these tanks range in size from 2 gallons (7.6 liters) to 528 gallons (2,000 liters). Offered with maximum working pressure up to 300 PSIG (21 bar), Therm-X-Trol is effective at …

Extrol expansion tanks accept expanded fluid in closed-loop hydronic systems to control pressure buildup, improve comfort and help reduce energy costs. Nearly seven decades after inventing the first diaphragm expansion tank, Amtrol’s lineup now includes specialty models engineered for modern, high-efficiency systems.

Amtrol ® SIZING. Amtrol offers sizing and technical information for engineering, installers, contractors and distributors. See below for more information.

AMTROL went on to invent the indirect fired water heater in 1980 and the thermal expansion tank in 1991. Throughout our history, AMTROL has been the world leader in the design and operation of the vital mechanical systems that are used to control hydronic heating and to …

OTHER AMTROL THERMAL EXPANSION TANKS. INDIREX WATER HEATERS. HYDROMAX WATER HEATERS. BOILERMATE WATER HEATERS. PREMIER WATER HEATERS. WATER HAMMER ARRESTORS. Diatrol Water Hammer Arrestor; CITY PRESSURE BOOSTERS. REVERSE OSMOSIS TANKS. PLUMBING ACCESSORIES. SELECTION TOOLS. Sizing & …

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