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Started Filling my 279G Tank

PorpoiseHork

Director
Board Member
Joined
Apr 20, 2017
Location
Spring Branch
#7
You can always upgrade to a higher GPD and produce a faster batch of water.

I just upgraded my RO unit from 150 GPD to 300 GPD by adding a second membrane. And let me tell you what a difference it makes. It used to take about 45-50 minutes just to fill a 5 gallon jug. Now it's down to about 20 min give or take. All in all it was a fairly cheap and easy upgrade too. Only cost about $35 for the membrane, housing and fitting kit off Amazon. Plumbing it in was easy, just ran the waste line from the first RO to the inlet of the second, then used a Y-fitting for the twin RO outlets before the DI stages. Now I can crank out roughly 12 to 13 gallons of RO/DI water per hour.

It all depends on your ro/di unit (GPD)-What is the psi on your ro di Gauage?

Most municipal water supply lines run at 50 psi +/- but even then a booster pump can be purchased for about $100 if it's needed. Also these days most RO units are fairly similar in design, many using the same housing layout. So as long as you match the same flow rate as your existing RO membrane you should be good to go with minimal expense.
 

Cody

Secretary
Board Member
Joined
Jul 23, 2014
Location
The Woodlands, TX
#8
I just upgraded my RO unit from 150 GPD to 300 GPD by adding a second membrane. And let me tell you what a difference it makes. It used to take about 45-50 minutes just to fill a 5 gallon jug. Now it's down to about 20 min give or take. All in all it was a fairly cheap and easy upgrade too. Only cost about $35 for the membrane, housing and fitting kit off Amazon. Plumbing it in was easy, just ran the waste line from the first RO to the inlet of the second, then used a Y-fitting for the twin RO outlets before the DI stages. Now I can crank out roughly 12 to 13 gallons of RO/DI water per hour.




Most municipal water supply lines run at 50 psi +/- but even then a booster pump can be purchased for about $100 if it's needed. Also these days most RO units are fairly similar in design, many using the same housing layout. So as long as you match the same flow rate as your existing RO membrane you should be good to go with minimal expense.
Did the same thing, added a booster, run it 80-90psi, and I can do about 340 gpd real time. Takes about 12-14 minutes to fill a five gallon bucket. I'm sure the math is off on that statement, but I timed it with a gradient cylinder once. It came up to about 340-360 gallons per day.
 

Rio1969

Supporting Member
Joined
Sep 4, 2016
Location
Richmond, Texas
#11
It all depends on your ro/di unit (GPD)-What is the psi on your ro di Gauage?
It is 90GPD, pressure is 60psi. Once it fills before the weekend I am good. I have been looking at adding a second membrane, will most likely do it sooner rather than later no that I have a much bigger tank.
 

RR-MAN

Supporting Member
Joined
Aug 18, 2003
Location
Pearland
#12
It is 90GPD, pressure is 60psi. Once it fills before the weekend I am good. I have been looking at adding a second membrane, will most likely do it sooner rather than later no that I have a much bigger tank.
Ok good.
Sine you have a larger tank now add a booster pump - it will save lots of money in a long term in terms of filters/waste water.

Mine runs at 100 PSI with a booster pump-
 

PorpoiseHork

Director
Board Member
Joined
Apr 20, 2017
Location
Spring Branch
#13
Ok good.
Sine you have a larger tank now add a booster pump - it will save lots of money in a long term in terms of filters/waste water.

Mine runs at 100 PSI with a booster pump-

60 PSI will be fine for dual 90 GPD membranes. I'm running twin 150's on that psi level with no issues. Now if the pressure regularly dips below 45 then there will be issues with proper filtering and such, so it's something you would have to monitor and add a booster if it does. For me I usually just run my RO in the evenings after the wife and kids have gone to bed so there is nothing else that can pull the psi down.
 

Bigfishy

Supporting Member
Joined
Mar 7, 2014
#14
Did the same thing, added a booster, run it 80-90psi, and I can do about 340 gpd real time. Takes about 12-14 minutes to fill a five gallon bucket. I'm sure the math is off on that statement, but I timed it with a gradient cylinder once. It came up to about 340-360 gallons per day.
I did the same. Changed the membrane to 150GPD and added second 150GPD unit and changed the flow restrictor with addition of a buster pump. I making about 400 gallons a day. If you need s hand let me know. I love close to you.


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RR-MAN

Supporting Member
Joined
Aug 18, 2003
Location
Pearland
#16
60 PSI will be fine for dual 90 GPD membranes. I'm running twin 150's on that psi level with no issues. Now if the pressure regularly dips below 45 then there will be issues with proper filtering and such, so it's something you would have to monitor and add a booster if it does. For me I usually just run my RO in the evenings after the wife and kids have gone to bed so there is nothing else that can pull the psi down.
60 PSI is an acceptable range but not good long term for the life of the filters - plus takes much longer to produce water.

Imagine water coming out of regular water hose versus pressure washer hooked up to the water hose. Not sure if this is a good analogy. :D
 

Rio1969

Supporting Member
Joined
Sep 4, 2016
Location
Richmond, Texas
#17
60 PSI is an acceptable range but not good long term for the life of the filters - plus takes much longer to produce water.

Imagine water coming out of regular water hose versus pressure washer hooked up to the water hose. Not sure if this is a good analogy. :D
I plan to get a booster pump in the not too distant future. There are other things I need to get before that.
 
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