Expansion Tank: Why do You Need One?

Expansion Tanks

An expansion tank, also commonly called a pressure vessel, is probably the most vital part that you see in most HVAC system. Pump expert Masterflow Solutions notes that although a pressure vessel finds use in the plumbing systems, its primary use is in the HVAC’s cooling system.

Its main work is to protect the HVAC system from unwanted pressure. This article looks at the various benefits of an expansion tank.

Safety purposes

Water heaters, regardless of whether they are using natural gas, electricity, or propane or heating oil, can suffer the adverse effects of thermal expansion. As the cold water turns hot in the tank, there is an increase in the overall water volume through expansion, which increases the pressure inside the tank.

For overall safety, the need to release this pressure comes in; and here is where a pressure vessel need arises. An expansion tank absorbs the extra water and minimises the excess pressure in the heating unit.

Long-life to your system

When your system does not have a pressure an expansion tank, there is excess pressure on the heating tank glass lining and other plumbing fixtures like the pipes. A pressure vessel helps maintain minimal pressure increase as water expands.

The tank also reduces water hammering which protects your HVAC system from stress and as a result, your system has better chances of longevity.

Water storage

If your HVAC system does not have an expansion tank, you must drain out excess water through the relief valve to avoid causing massive damage to the pipes. If you have an expansion tank, you have an alternative to store the excess water until you are ready to put it back into the heating system.

Most pressure vessels can handle various pressures on HVAC systems. Expansion tanks can easily pump air in and out of the heating tank thereby resolving various pressure problems in the HVAC.

Furthermore, expansion tanks adjustment according to the fluctuation of the pressure in the HVAC system.