Does the expansion tank have to be installed on the cold side?
Although expansion tanks can be installed on the hot side, we strongly recommend they be installed on the cold line, downstream of the shutoff valve.
Where should an expansion tank be installed in relation to the hot water heater?
Your expansion tank can be anywhere on your plumbing system and does not need to be installed in close proximity to the water heater. It is most commonly installed using a “T” at the cold inlet to the water heater. But, functionally, it can be installed anywhere on the cold inlet line.
Can the expansion tank be installed at any angle?
The expansion tank can be installed at any angle. This will conflict with info that comes with any expansion tank you buy at a retail store. The installation instructions that come with retail expansion tanks say the tank must be installed in a hanging vertical position.
When you choose a retail expansion tank, it comes with a “Saddle Fitting.” This allows you to avoid soldering and makes installing an expansion tank simpler for the average person. The saddle fitting simple clamps onto the pipe, and it comes with threading that allows you to attach the tank.
First, you drill a small hole in the existing pipe. Next, the clamp is secured so that the hole aligns with the inlet for the expansion tank. While this is one option, we don’t recommend these fittings for several reasons. They only allow the tank to be placed in one position (vertical), and they are unreliable.
Instead, we recommend soldering the proper fittings into the system or the use of galvanized fittings.
How to know if you need a water heater expansion tank replacement
Your expansion tank is a vital part of your home’s plumbing and water heating system. While a traditional water heater might last 10-15 years, your expansion tank could fail before this point. First, you can extend the life of your expansion tank through proper installation that ensures the air pressure in the tank matches the water pressure in your home.
You can prevent a costly accident by periodically inspecting your expansion tank. If you see dripping water under the tank or near the fittings, the valve might be blocked. This can happen due to debris, such as mineral deposits.
You should also have a mechanism in place to check the pressure, such as a water pressure gauge, that can tell you if the tank is functioning properly or if the diaphragm has been damaged. A water heater expansion tank can often be replaced without having to replace your entire system.
For more info contact Pressure Vessel Supplier in UAE or call us at +971 4 252 2966