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Amtrol Inc. designed and patented the first Extrol diaphragm expansion tank in 1954 to control system pressure and help reduce energy consumption in heating and chilled water systems. Over six decades later, Extrol is still the world's leading expansion
From the Manufacturer
Amtrol Inc. designed and patented the first Extrol diaphragm expansion tank in 1954 to control system pressure and help reduce energy consumption in heating and chilled water systems. Over six decades later, Extrol is still the world's leading expansion
Susan P.
Reviewed in the United States on March 8, 2025
Fast service good products
Leroy Mould
Reviewed in the United States on February 27, 2025
The tank arrived as scheduled. It was the same as the tank that needed replacement. The price was reasonable. I got it installed pretty easily and seems to be functioning- but it's only been one day.
Don
Reviewed in the United States on February 24, 2025
easy to install perfect replacement part
RobS
Reviewed in the United States on February 16, 2025
Easy installation on my hydronic heating system. Took less than 20 min stay to finish. Also nice that it’s made in USA. Used a little Teflon tape and no leaks. Glad I didn’t call a repair company as this is a simple installation. Also added a new Taco air vent.
Neal
Reviewed in the United States on May 28, 2024
Replacement for identical part that was showing some corrosion after eight years in use with my tankless boiler. Easy to replace in my situation but it may not be a d-i-y job in some instances due to various positionings, and piping to the tank.
Robert Boccio
Reviewed in the United States on December 14, 2024
It does what it needs to do. After 10 years my old one needed replacing, this fit right in and everything is back to working again.
ScrewE
Reviewed in the United States on November 21, 2024
Did maintenance on my home oil burner and needed to replace this part. This was a perfect fit and everything is running fine.
James A.
Reviewed in the United States on October 12, 2024
50 year old Burnham boiler was having major pressure problems with gage running into the red. Bleeding off water would bring down for a while. Old pressure tank was about 20 years old and just copied the model numbers off it and sure enough they still make the same model with same specs. Took longer to empty the system of water than it did to replace this pressure tank. Simple unscrew old and screw new one on with teflon tape. Pressure now stabilizes and works like new. Probably saved myself several hundred dollars for this diy rather than calling a furnace company to come out.
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