Can Expansion Tank Be Installed Upside Down

Looking to install an expansion tank for my new water heater. The old one didnt have one when I bought the house and just crapped out yesterday. Now I know the tank needs to be supported because if it ever fills with water it will be very heavy. I read that it shouldnt be installed upside down because if it should fill with water it will be a mess when removing it. However, can one be installed right above the cold water inlet to the boiler using a tee? If it should fill up once you drain down the boiler it will drain into the boiler no? Also the weight would be transferred straight down so no need to hang?

Dec 11, 2013. I've been on a plumbing DIY kick lately, and after recently replacing a hot water recirculating pump that had been installed incorrectly (upside-down!). The expansion tank's purpose is to protect your house's hot water system from excessive pressure, which can cause damage to fixtures, your water heater,.

First determine whether or not an expansion tank will be beneficial for you. If you have a check valve or pressure reducing valve in your system, then an expansion tank could be a good addition. You have to choose the right size tank to match your WH size in gallons and your water pressure. Now, there are a few good locations for the tank, and they are all around the cold supply side to the water heater. Your suggestion to mount the tank exactly on the water heater could work in certain situations, but I prefer the tank to be mounted about a foot away from the water heater - but still on a T in the cold supply pipe to the WH. Then support the tank with a custom built shelf off the wall. Up, down or side way mount - doesn't matter.

The main thing is to have the tank rest on the shelf. Another good idea for convenience is to install a shut off ball valve, after the T and on the way to the tank. Google 'sizing an expansion tank' and you'll get sites with sizing calculators. Crack Password Protected Powerpoint Presentation. They will ask you to fill in info like: WH size in gallons (50), water pressure in the house (should be between 50 and 75), WH water temp (I keep mine below 120 in winter and below 105 in the summer), and so on.

Then you'll get the recommended expansion tank size in gallons. A 2.1 gal may or may not fit your needs, I'm not sure.

If not, I'm sure HD will take it back. Send pictures, you can upload them on a host like photobucket.com then post the link here. There was a chart right on the box doh!

My 50 gallon heater and pressure does fall within that tank but how come some other brand tank require larger tanks for the same specs? Couldn't position it vertically so had to go the horizontal option also I like your idea of the ball valve before the expansion tank. Although the internet says not to do that because then you can isolate the tank from the hw heater, who is going to turn that valve?!?! And you are right it is so much easier to change it out in the future. Here are some photos of the finished job (will insualte soon. Thanks for your input! Let me know if you see something I did wrong.

Tested my house pressure the other day and got 80psi! Called the water company and they are sending someone down to check. I had left the tank set at factory pressure (40psi). If I wait for them to turn down the pressure before setting the air pressure in the tank will that harm it in the meantime? Also I'm thinking about installing a pressure gauge on the cold water line by the tank.

Is that something good to have? I will be able to see spikes down the road if the tank fails.

Couldnt find much of anything about it on the web which leads me to believe its not common practice?

Technically it is upside down. Expansion tanks are really simple devices. They contain compressed air and a special rubber bladder.

When your hot water heater turns on, the water within your piping system begins to expand. This expanding water enters the expansion tank. Eventually, hot water is drawn from the system through a faucet and the expansion tank releases the extra water into the piping system.

This also prevents the expanded water to re-enter the public system if your home is not equipped with a back flow preventer. • Tell us some more • Upload in Progress • Upload failed. Please upload a file larger than 100x100 pixels • We are experiencing some problems, please try again. • You can only upload files of type PNG, JPG, or JPEG. • You can only upload files of type 3GP, 3GPP, MP4, MOV, AVI, MPG, MPEG, or RM. • You can only upload photos smaller than 5 MB. • You can only upload videos smaller than 600MB.

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