Thermal expansion refers to the characteristic of water to expand when heated. As the temperature rises, its density decreases, and the volume expands. As water will not compress, the expanded volume must go somewhere. When this process occurs in a closed hot water system, the installation of an expansion tank will assure the water heater, and the home’s plumbing is protected from the increasing pressure, and your home from potential leaks.
An expansion tank allows the expanded hot water to enter, reducing the pressure on the hot water system. Consult a plumber about the advisability of adding an expansion tank to your hot water system. An expansion tank is sized according to your home’s needs, based upon the capacity of your home’s water heater, and the pressure of water entering your home. Ensure you use a qualified, licensed plumber for proper installation.
How an Expansion Tank Works
The expanded hot water forces a diaphragm in the expansion tank to open, allowing the excess volume of expanded hot water to enter. This relieves the pressure on the hot water system, and the risk to the water heater, and the home’s plumbing in Staten Island.
The size expansion tank your home will require is determined according to your household’s needs, and is based on the water heater capacity, and the water pressure entering your home. You can rely on proper installation of an expansion tank by our qualified plumbers in Staten Island.
Before federal regulation required the installation of backflow preventers, expanded hot water could expand into the homes water lines, and the municipal water supply, reducing the pressure on the system. Due to the potential for contamination of the public water supply, backflow preventers are now required, eliminating this avenue of escape.
Another factor the homeowner should consider is the warranty requirements for new water heaters. While not all manufacturers require an expansion tank to maintain a warranty, some do and it is to the homeowner’s advantage to read the warranty thoroughly. A licensed and qualified plumber will be aware of the code and water heater requirements.
Furthermore, the installation of an expansion tank is recommended when backflow preventers are installed, with water meter replacement, water heater replacement, during new home construction, and when a pressure reducing valve is installed on the home’s service line. Platinum Plumbing’s outstanding plumbers in Staten Island specialize in the installation and repair of expansion tanks.