Watts ETX-30 Non-Potable Water Carbon Steel Expansion Tank for Closed Loop Hydronic Heating System Piping, 1/2" MNPT Connection, Tank Volume 4.7 Gallons, Maximum Pressure 75 psi

Perfect Fit and replacement. Purchased the EXT-30 to replace my failed Flextrol expansion tank purchased 12/2020. Apparently the bladder failed, causing my hydronic heating system to increase pressure causing the pressure pop off valve to drip. The old tank was small, 2.1 gallon size. When researching replacements, I accidently ordered the 4.5 gallon. Thankfully it just barely fit. I have three zones and fingers crossed the larger capacity will endure less stress during the repeating thermo cycling. Watts tank is well built, came pre charged at 12 psi. Spun right on 1/2 mnpt connection. Ordered on Monday, delivered Wednesday and 30 minutes later was installed. Pressures have maintained, no leaks, and zero worries. Btw, I called the plumbing supply store where I purchased the Flextrol in 2020, I believe it was less than 100 bucks, wanted a whopping $150.

Easy to install. Better pricing than from the Big Box store. Good quality.

OEM. Worked Just Fine!

This tank is easy to install fits perfect on my water heater

Exact fit

Bladder in the existing one broke down after many years, this was an easy replacement. Now the loop pressure remains reasonably constant, important to prevent damage to pipes.

I was so happy that I found this on Amazon. My heater broke down in the dead of winter because the original tank had a whole in it and as leaking water. My mechanic told me what I needed and I found it on Amazon. It looks like it is made better than the original tank, which was only about 2 years old. So I’m praying that this one lasts longer. Great value for the money. The tanks in the stores cost more than this one did.

It did not leak, it had a dent in it and I installed it anyway, the functionality is of this product is essential for the boiler is essential

juste ce qui me falais

Arrived on time and was easy to install into the fridge.

I wasn't sure if this would work, we've had banging pipes for a long time. Well... it absolutely eliminated ALL the banging pipes in my house. We have a front loading washing machine and for 8 years we could tell from anywhere in the house that the washing machine was running. Once I installed this expansion tank, my wife had to go back to the laundry room twice to make sure the washer was actually running. Even I couldn't believe it was working so well. So simple to install but make sure you put enough wraps of teflon tape around the joint. I only put three and had to go back and redo it with 8 to stop a minuscule drip. Also, it can be heavy when half filled with water, make sure you have built a sturdy base. I don't know why they can't weld a bracket to hang these from right on the tank?? Highly recommended if you can hear your pipes when the water is moving through the pipes.

I haven't installed yet, will update in future if disappointed with product. As of now, appears to be of quality construction and sound design. Received in a very timely manner.

Worked perfectly.