Cherokee County Sewer and Water Authority Expansion Tank Requirements
What is Thermal Expansion?
Thermal expansion refers to he characteristic of water to expand when heated and contract when cooled. Unlike air, which can be compressed, water grows in volume and must be accommodated when heated.
Why is Thermal Expansion occurring?
In a water heater, thermal expansion can create more pressure than the system can handle. When unchecked, this pressure can result in expensive leaks, as well as damage to the water heater, pipes or other plumbing fixtures.
When is a Thermal Expansion device necessary?
An expansion control device is required by section 607.3.2 of the Standard Plumbing Code and is necessary when any of the following occur:
Still have questions? Contact one of our friendly office staff and we will be glad to assist you in determining if you need to install or replace your existing thermal expansion tank.
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