Residential Thermal Expansion Tank

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.

Residential thermal expansion tank.

Pricing is largely dependent on the size of the tank. For most residential installations with 40 or 50 gallon water heaters a simple 2 gallon tank is fine. 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. Nsf and iapmo approved.

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. The tank is quite easy to install with a normal 3 4 inch threaded connection. There is a check valve on your meter closing the system and creating negative thermal expansion impact. The tank is full of air.

Read the pressure requirement on the side of the tank. Xt 8 thermal expansion tank is the 2 gal. This is usually between 40 and 60 psi. Eastman thermal expansion tanks are designed to prevent backflow from residential water heaters.

As the system pressure increases water enters the polypropylene lined water chamber of the tank expanding a diaphragm into. Proper tank sizing is critical to the performance of your water heater. The tank is for 30 gal. Air is compressible but water is incompressible.

When you choose a retail expansion tank it comes with a saddle fitting. If your home was built in 1985 or is newer you should use an expansion tank. 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. The installation instructions that come with retail expansion tanks say the tank must be installed in a hanging vertical position.

Water heater expansion tank prices start at around 40 and range up to nearly 200. Obtain a suitable thermal expansion tank based on the size of your water heater. A thermal expansion tank is a simple way to solve this problem on most smaller water heater systems. Maximum working pressure 150 psi and maximum operating temperature is 210 f.

Provisions shall be made for draining nonpressurized tanks without emptying the system. When the heater goes through a heat cycle the excess volume of water pushes into the tank and compresses the air but keeps the water pressure the same. 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. The expansion tank can be installed at any angle.