ro/di water pressure

[PapaKlix]

recently set up an ro/di unit at home and remembered from when i put my sprinkler system in that my water pressure was somewhat low (either stupid town restriction or the fact i'm on top of a hill). anyway, pressure gauge in the RO/DI unit reads 40 steady and never gets above it. i thought i had read somewhere that 65gph was required, but can't locate that. am i remembering that correctly? how can i correct this?

 

[Superstretch18]

It's not required, but you will get more waste water (read: significantly more waste water) with lower pressure...

 

[PapaKlix]

ahhh... that would explain another question i had. thanks for the follow up. are there pumps or something that can increase pressure?

<a href=showthread.php?s=&postid=14866286#post14866286 target=_blank>Originally posted</a> by Superstretch18
It's not required, but you will get more waste water (read: significantly more waste water) with lower pressure...

 

[Superstretch18]

Yup, you can get booster pumps to raise pressure. Here's an option:

http://www.bulkreefsupply.com/RO/DI-Filters-&-Systems-RO/DI-Accessories/c9_11/index.html

Edit: check the bottom of the page...

 

[Tylt33]

I think 40 gph is minimum... it's what I run at.

 

[Flipper62]

I believe that most MFG of RO/DI units say that you need 60 to 70 PSI to work proficiently & get the 4 to1 ratio

 

[THE ROOK]

If you have a problem getting your tds levels to 0, then you'll likely need a booster pump.

 

[PapaKlix]

<a href=showthread.php?s=&postid=14866352#post14866352 target=_blank>Originally posted</a> by Superstretch18
Yup, you can get booster pumps to raise pressure. Here's an option:

http://www.bulkreefsupply.com/RO/DI-Filters-&-Systems-RO/DI-Accessories/c9_11/index.html

Edit: check the bottom of the page...

do i need the auto-shut off valve for this product? will that not only shut off the pump, but also any flow into the RO unit?

 

[Gtstricky]

The shut off valve turns off the pump when the water stops flowing. If you have a float switch or another system that stops the water when your container is full you need the shut off valve to turn the pump off. If it is a system where you are constantly monitoring its use (ie you can unplug it when done) you do not need the shut off valve.

 

[WaterKeeper]

Home RO/DI units need a minimum of 35 psi in most cases. Typical consumer tap water is distributed in the 40-60 psi region. Increasing the pressure to 75-90 psi does improve efficiency and reduces the amount of waste. It is probably worth the additional cost over time.

BTW-there is probably a water tower feeding that hill and the tanks level controls your water pressure.

 

[cardiffgiant]

I'd check your manual to be sure. I believe that the manual for mine calls for 60psi to get 90gph.

 

[WaterKeeper]

I love the Avatar Ben. Where did you come up with that or was it photoshopped?

 

[PapaKlix]

Thanks everyone, I ordered the pump from bulk reef today. I got the switch too as I'm not going to always monitor the ro unit.