Water Heater Thermal Expansion Tanks
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Low rates and easiest to calculate/understand shipping/handling for water heater expansion tanks
"What is thermal expansion?"
When water is heated, it expands in volume by 2 - 3%, depending upon the initial and final temperature. This can mean as much as three or four extra gallons of water in a closed system. If there is no demand for hot water, the expanded volume of water has no place to go. Since water is not compressible, the expanded water cannot be accommodated in the piping system, and therefore it creates hydraulic pressure, exerting a potentially hazardous stress on the system.
