RO/DI system

[Vette67]

That looks like a pretty normal flow rate. If you have a 75 GPD (gallons per DAY) membrane, and if you are actually getting 75 GPD, then it would take an hour to get about 3 gallons. So your assessment about "hours" to fill a 5 gallon bucket is pretty accurate. Since you are running closer to 50 PSI (instead of 80 to 90PSI), you are probably not getting 75 GPD, so you can drop that by a little more. That is what the flow looks like on an RO system.

 

[ScubaFish802]

This comes right from the BRS manual that comes with it

 

[Mical]

With my BRS setup up I can make almost 10gal per hour (w/Booster pump & water saver membrane) W/booster at 90psi

 

[Ricky Martinez]

That looks like a pretty normal flow rate. If you have a 75 GPD (gallons per DAY) membrane, and if you are actually getting 75 GPD, then it would take an hour to get about 3 gallons. So your assessment about "hours" to fill a 5 gallon bucket is pretty accurate. Since you are running closer to 50 PSI (instead of 80 to 90PSI), you are probably not getting 75 GPD, so you can drop that by a little more. That is what the flow looks like on an RO system.

Not sure if a booster pump would give up much more of a flow rate ?

 

[Ricky Martinez]

With my BRS setup up I can make almost 10gal per hour (w/Booster pump & water saver membrane) W/booster at 90psi

so you think a booster pump would help my flow rate , is it worth spending that extra money on a pump ??

 

[KStatefan]

yes there is a flush valve, but according to the instructions while producing water the flush valve should remain in the closed position.

That is why i asked if it was open. Water will just trickle out if you are trying to produce water while the flush valve is open.

 

[Ricky Martinez]

This comes right from the BRS manual that comes with it

yes i read that part, but for some reason the flow rate just looks so much slower to me. i did fill a 5 gallon container in a matter of almost 3 hours. so i guess that GPD is right on point. Thank you

 

[PasoFish89]

That's crazy, I might buy a 55 gallon drum or a garbage pail with lid whichever i can get faster and fill that. place a nozzle on it so I have water on tap.

I've debated doing the same except instead of using head pressure/gravity just putting a pump in there with some hose line on it. My set up is pretty janky right now, I have it running off a garden hose in the garage to 5 gallon jugs and the waste water runs through like 100 feet of tubing back to my well water storage tank. It'd be nice to fill such a large quantity and not have that crap set up all the time haha.

 

[Mical]

so you think a booster pump would help my flow rate , is it worth spending that extra money on a pump ??

The booster pump increases productivity of your membranes as well as increase flow. RODI systems should come with a booster pump IMO

 

[Vette67]

Not sure if a booster pump would give up much more of a flow rate ?

I added a booster pump to mine. I was getting around 45PSI through mine from the city water pressure, and with the booster pump, I have it dialed up to 85PSI. It did increase my flow rate, but it is still not significantly more. I have a 100GPD membrane, so I am sure I am getting a lot closer to 100GPD now. It is up to you if you think a booster pump is needed. But I would not expect a drastic change in your flow rate even if you did put in a booster pump. You may increase your clean water flow by 25% or so. But that is just a guess on my part....

 

[Opus]

I haven't seen it mentioned yet, but temperature also affects the flow. I believe the rate is given at something like 76 degrees. The lower the temperature the more efficiently it works but the slower water is produced. in the summer I can fill a 5 gallon jug in about 1 hour. in the winter it takes around 1 1/2 hours.

 

[01xp]

so you think a booster pump would help my flow rate , is it worth spending that extra money on a pump ??

100%

 

[Idoc]

With my setup here I make 5 gallons of rodi water in about 25min

Nice... I'm jealous of that production.

 

[Opus]

so you think a booster pump would help my flow rate , is it worth spending that extra money on a pump ??

You need to fill a gallon jug and time it. Then calculate that out to how much that will be in 24hrs and see how that compares to what your RO is rated. Then you can decide if the cost of the booster is worth it to you.