Water Heater Thermal Expansion Tank Sizing

Expansion tanks are pre charged with a 38 psi air charge.

Water heater thermal expansion tank sizing.

Determining incoming or supply water pressure. Reduced and water drains out of the expansion tank back into the system. 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. To accommodate the thermal expansion required for higher temperature and or higher pressure.

Thermal expansion tank sizing residential commercial. Pmc sizing chart for residential water heaters water heater capacity in gallons inletwater pressure 30 40 50 66 82 100. There are two important considerations to make when sizing an expansion tank. Hot water heater expansion tanks are small but there available in several sizes.

The incoming or supply water pressure and the volume of the storage tank. Find out more by visiting our website. 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.