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

Excellent upgrade to our RO system. Old tank would barely fill a gallon, this bad boy fills 3+ gallons no problem. Easy to install although the tubing to my RO system was larger than the supplied valve, just used the valve from my old tank but make sure to measure your tubing.

Worked exactly as expected. Came with just the right amount of air pressure. Replaced a tank that was giving water a musty flavor - now the water tastes great!

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.

It worked like it should. This is great and I haven't had it leak yet. I will buy from you again.

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.

Why did I not already have one of these?? It is so nice having this large resevoir so I can fill pasta pots, dog bowls, kids sports tumblers, etc. without having to stop part way thru and wait for it to refill. It fits nicely under my sink, but note that I have a center sink drain. It may not fit under a double sink with 2 drains. Measure twice before purchasing. Again, why did I not purchase one of these 15 years ago????

Purchased and installed in December with new RO system and now it is March, and it no longer works. I switched to the smaller one that came with the system in purchased and it works fine. I will not buy again from this company as the return window was only until the end of January.

Came charged at the correct PSI and install was simple. I simply unthreaded the old tank and used the same connection to connect to this tank (make sure to add teflon tape).We bought this to replace a 3-gallon tank that came with our system; this thing blows that tank out of the water...heh. The previous tank would severely slow down after about a half-gallon. This tank has more pressure and it maintains it pretty well even after 3+ gallons are quickly used. Overall, I am happy with the purchase because we now always have enough RO water when we need it (we use the RO water for the plants as well as for drinking).Others complained about a bad taste, ours was fine. After install we waited 4+ hours and drained the entire tank like the directions instruct.