Residential Thermal Expansion Tank

The expansion tank can be installed at any angle.

Residential thermal expansion tank.

Pricing is largely dependent on the size of the tank. The tank is for 30 gal. Obtain a suitable thermal expansion tank based on the size of your water heater. Water heater expansion tank prices start at around 40 and range up to nearly 200.

Air is compressible but water is incompressible. This is usually between 40 and 60 psi. Nsf and iapmo approved. Eastman thermal expansion tanks are designed to prevent backflow from residential water heaters.

Provisions shall be made for draining nonpressurized tanks without emptying the system. A thermal expansion tank is a small pressurized tank with a compressible air cushion diaphragm that is installed on the supply side cold water inlet of a water heater. For most residential installations with 40 or 50 gallon water heaters a simple 2 gallon tank is fine. Xt 8 thermal expansion tank is utilized on potable water lines between the backflow preventer or pressure reducing valve and the water heater for protection against water thermal expansion in residential applications.

Installing a tank water heater might seem easy but homeowners who refinish their basements often create a number of code violations with respect to the water heater. If your home was built in 1985 or is newer you should use an expansion tank. The tank is full of air. Proper tank sizing is critical to the performance of your water heater.

When the thermal expansion of water creates excess pressure within the water heater excess water is forced into the expansion tank keeping pressure levels within the. When you choose a retail expansion tank it comes with a saddle fitting. There is a check valve on your meter closing the system and creating negative thermal expansion impact. Hot water boilers shall be provided with expansion tanks.

As the system pressure increases water enters the polypropylene lined water chamber of the tank expanding a diaphragm into. The tank is quite easy to install with a normal 3 4 inch threaded connection. The installation instructions that come with retail expansion tanks say the tank must be installed in a hanging vertical position. Xt 8 thermal expansion tank is the 2 gal.

Code expert glenn mathewson describes 10 common water heater code issues including confusion about drip pans and drains unsupported expansion tanks and plastic vents lack of combustion air and more. Nonpressurized expansion tanks shall be securely fastened to the structure or boiler and supported to carry twice the weight of the tank filled with water. Read the pressure requirement on the side of the tank. This will conflict with info that comes with any expansion tank you buy at a retail store.