75GPD RO Unit. How much water are you getting?

Maverick00 · #1 10-20-2011, 03:32 AM

I have a vertex RODI unit, however im running at a pressure well below recommended. Im curious as to how long it takes you guys to fill up a 5Gal bottle with a 75GPD unit so i can compare it with mine? Im trying to decide if i want to buy a booster pump...

Delphinus · #2 10-20-2011, 05:24 AM

What kind of psi are we talking about? I run mine at 100psi and get pretty much 75gpd, give or take. It's not just the speed of output if you're running less pressure, but I think your product to waste water ratio is going to be much less also.

syncro · #3 10-20-2011, 05:37 AM

80psi, 75 gpd membrane = 3 to 4 gallons per hour, 1 ppm tds

DAVE · #4 10-20-2011, 01:54 PM

Also depends alot on what temperature your water is at...cold water will bring down your GPD

Reef Pilot · #5 10-20-2011, 02:06 PM

Instead of a slight improvement with a booster pump, you might want to consider using these. I have two of them plumbed into my RO/DI system and have plenty of reserve water on hand for things like filling 5 gallon jugs. My 75 gpd system at 65 PSI fills the tanks back up in a couple hours.
http://www.airwaterice.com/product/P...2-Gallons.html

The Codfather · #6 10-20-2011, 02:32 PM

Quote:

Originally Posted by Hydrologist

Also depends alot on what temperature your water is at...cold water will bring down your GPD

But....let it be known that hot water should not be passed threw that membrane, as it will damage the membrane itself. Depending on manufacturer, temperatures vary but are close to 72-77F for better preformance.

Maverick00 · #7 10-21-2011, 03:31 AM

Im running around 26psi. Im getting MAYBE a gallon and a half per hour. It appears im running extremely inefficient.. I plan on moving in the next few months so i might wait it out until i know what kind of pressure my new place has since a booster pump is about 100 bucks?... Thanks for the comments.