– RO Water Filtration System Expansion Tank – 6 Gallon Water Tank -– Compact Reverse Osmosis Water Storage Pressure Tank with Free 1/4" Tank Ball Valve

Easy to install, good quality and works like a charm. Much cheaper than getting a replacement through Kinetico.

Works exceptionally well as expected

Original RO system came with a paltry 3 gallon tank, of which only 1.8 gallons was for water storage. I didn't know how awful that was until the membrane in that tank died. Determined to ensure we always have enough RO and plenty of pressure in the line, I doubled the desired capacity, and then DOUBLED it AGAIN. So, the 8 desired gallons of liquid required a 10-12 gallon tank. The tank came with ZERO installation hardware. I stole the old valve from the old tank which worked out just fine. By morning, we had 8 gallons of RO water flowing. I strongly recommend this tank!

First - it's a tank (though a big one). Not much to it. It's almost life changing to have this much drinking water available with this much pressure. Absolutely loved the past 2-1/2 years. Unfortunately - the happy time came to an end. Water tasted rubbery yesterday - I suspected the cause but didn't want to deal with it. Today I finally went under the sink and tested the air valve - yup, out spurted water. Means the bladder ruptured and the tank is shot. Note to others - if you have any RO system with any tank, new or old, and the water tastes rubbery or you have spurts of air from the dispenser, odds are the tank has failed. Easy check - just unscrew the air valve cover (if present) and press on the stem. If water comes out - the bladder has ruptured. Replace the tank. What to do? 1-year warranty - and it's been 2-1/2. I don't see anybody with a 5-year, let alone a lifetime warranty, so does it matter? This one says it's coming from Taiwan. The others are China. I'm biased - I'll order another of these. Hope this one lasts longer.

Tank was smaller than I hoped for but it serves the purpose. My old tank was larger. Just happy to have my R/O up and running! Love it!

The tank that came with r/o system was clearly way too small. I ordered this unit and, it is perfect for the area I have available under my counter. Holds a bigger supply that is ready when I need it

Bladder failed in less than 18 months. Have to buy a new one now.

I’ve had a RO system for many years and had a smaller tank on it. The bladder finally went and I decided to upgrade and it is performing very well. I followed the instructions to clear the tank after one minute of operation and then again after four hours of operation. There is no residual taste. When hooking it up to your system, I would make sure to just leave the pressure where it’s at as it is typical for most systems. If it doesn’t work for you then adjust it. Furthermore, when you put the Plastic valve on the top, I would use not only Teflon tape but also some dope as well. I had to return the first tank they sent as it was not wrapped well and came dented, but to be fair it did work for the short period of time before a replacement was sent, the company was quite responsive. As an FYI, the second tank came much better wrapped. It was undamaged. they had clearly realized they had a problem so they change the wrapping.