Potable Water Expansion Tank Sizing

This expansion tank controls thermal expansion of water in open domestic hot water supply systems.
Potable water expansion tank sizing. The potable water expansion tank shall be installed in the cold water service pipe line on the supply side of the water heater or water storage tank. 10 5 7 requires backflow prevention to prevent. National standard plumbing code. 2 250 gallon water heaters 500 gallons total.
Water heater tank capacity is 100 gallons. Therm x trol expansion tanks are designed to control pressure in commercial closed potable hot water systems. Potable water expansion tanks thermal expansion occurs when water is heated during non use periods the installation of a pressure reducing valve prv check valve or back flow preventer closes the water system leaving water with no room for expansion. Let s take some examples.
Customer support find a watts distributor. 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. Examples of one way devices include. It absorbs the increased volume of water generated by the hot water heating source.
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. Customer support customer support. Backflow preventers. Its pre pressurized steel tank uses an expansion membrane to prevent air water contact for long system life.
100 gallons x 10 10 gallon expansion tank. Our sizing guide for potable water expansion tanks helps you find the right watts regulator or data potable tank. Find out more by visiting our website. Sizing the therm x trol potable water expansion tank as water is heated thermal expansion takes place.
500 gallons x 10 50 gallon expansion tank. This small volume of water can cause rapid increases in system pressure if a backflow preventer or other one way device is installed without the proper thermal expansion tank. Available in diaphragm partial acceptance bladder and full acceptance bladder designs these tanks range in size from 2 gallons 7 6 liters to 528 gallons 2 000 liters.