Water Heater Thermal Expansion Tank Sizing

The incoming or supply water pressure and the volume of the storage tank.

Water heater thermal expansion tank sizing.

Sizing expansion tanks for water heaters can be a complex engineering challenge but residential expansion tank sizing has been simplified through the use of calculators. To accommodate the thermal expansion required for higher temperature and or higher pressure. Our sizing guide for potable water expansion tanks helps you find the right watts regulator or data potable tank. Hot water heater expansion tanks are small but there available in several sizes.

Amtrol products are made in the usa at our iso registered facilities by american workers dedicated to producing the highest quality expansion tanks in the world. New or larger expansion tanks may be needed due to pressure reducing valves check valves and backflow preventers added to the community s water system. Determining incoming or supply water pressure. Thermal expansion tank sizing residential commercial.

Reduced and water drains out of the expansion tank back into the system. Expansion tanks are pre charged with a 38 psi air charge. If the inlet water pressure is higher than 38 psi the expansion tank s air pressure must be adjusted to match that pressure but must not be higher than 80 psi.