Those who have an at home RO filter setup

[RyPA]

Is the valve to pressurize the tank that hex nut?

 

[day_trippr]

Maybe, if there's a down tube from it to the other side of the bladder/diaphragm where you want there to be air and no water...

Cheers!

 

[Buckeye_Hydro]

Look for a schrader valve on the side of the tank - this is where you check (and add) air pressure to the tank.

 

[RyPA]

I removed that white hex nut and there is an air valve (car/bicycle tire style) under it. I checked the pressure and it was at 0. I attempted to put air in and it almost immediately maxes out to 60psi. But this does not resolve the issue, I think there is something wrong internally and I am going to pick up a replacement tank.

I think that the 15-20 seconds of good water flow I get from the tank is just from the pressure built up from the RO water filling the tank from my household water pressure.

 

[Agent]

I removed that white hex nut and there is an air valve (car/bicycle tire style) under it. I checked the pressure and it was at 0. I attempted to put air in and it almost immediately maxes out to 60psi. But this does not resolve the issue, I think there is something wrong internally and I am going to pick up a replacement tank.

I think that the 15-20 seconds of good water flow I get from the tank is just from the pressure built up from the RO water filling the tank from my household water pressure.

That actually sounds reasonable if it's full of water yet, since there's no room for air to go. If you left the discharge open while adding air, you'd get a sense of the volume discharged by added air.

 

[day_trippr]

Your tank must be using a balloon style bladder attached to that larger white center thing in the middle of the tank bottom, leaving space around that for that air pressure line to the side. And it does sound like the bladder failed and the tank is full of water...

 

[Buckeye_Hydro]

https://www.buckeyehydro.com/water-storage-tanks/

 

[RyPA]

I found this one on amazon

iSpring T32M Pressurized Water Storage Tank with Ball Valve for Reverse Osmosis RO Systems, 4 Gallon, 1/4" Tank Valve Included https://a.co/d/3Nxfkra

 

[day_trippr]

That's the style that came with my RO system. Same ratings as well. I'd say they're quite common...

Cheers!

 

[mabrungard]

Just remember that you'll only get about half the tank volume from a pressurized tank. That 4 gal tank will supply maybe 2 gal quickly and then the output will be just what the membrane can produce. Get a bigger tank if you need more immediate output. I have a 20 gal tank so that I can supply about 10 gal for my typical brew day.

 

[Buckeye_Hydro]

Just remember that you'll only get about half the tank volume from a pressurized tank. That 4 gal tank will supply maybe 2 gal quickly and then the output will be just what the membrane can produce. Get a bigger tank if you need more immediate output. I have a 20 gal tank so that I can supply about 10 gal for my typical brew day.

correctamundo.

 

[day_trippr]

I'd be cautious about storing a lot of RO water as there's nothing in it to prevent biological projects from happening...

Cheers!

 

[mac_1103]

There's also nothing in it to allow biological projects to happen. If something that bugs can eat gets into your RO water, then it isn't really RO water anymore, is it?

 

[day_trippr]

Not so sure that's true. RO systems are supposed to be periodically cleaned and sanitized...

Cheers!

 

[jerrylotto]

Not so sure that's true. RO systems are supposed to be periodically cleaned and sanitized...

How do you "clean and sanitize" an RO system? I always assumed that you just changed out filters and membranes when they are spent.

 

[day_trippr]

Russ @Buckeye_Hydro has a pdf on cleaning and sanitizing RO systems with pressure tanks...

Cheers!

 

[jerrylotto]

Russ @Buckeye_Hydro has a pdf on cleaning and sanitizing RO systems with pressure tanks..

Ah, mine is a tankless system adopted from a countertop RO 5 stage unit.

 

[day_trippr]

Lol! You're not getting off that easily He has a separate pdf for thankless systems...

https://www.buckeyehydro.com/content/Sanitizing_RO_RODI.pdf
Cheers!

 

[Agent]

Lol! You're not getting off that easily He has a separate pdf for thankless systems...

Those dang unappreciative RO systems!

 

[day_trippr]

Doh! Automunged!