Amtrol was founded in 1946 on the premise that innovation, quality and service will be rewarded with customer loyalty and support. Amtrol set a new standard in the Hydronic industry by introducing the world's first pre-pressurized diaphragm expansion tank in 1954. This innovative product named Extrol., revolutionized the design and operation of vital mechanical systems - systems used around the world to control Hydronic heating and store potable water.

Today, the same technology and innovation is incorporated into water heaters, pressure boosters, well tanks, and chemical containers manufactured by Amtrol. As technology has rapidly advanced, Amtrol's stringent quality standards have risen to even higher levels.

As a leading international producer and marketer of flow and expansion control technology, Amtrol plans to meet the growing needs of domestic and worldwide markets with facilities around the world.