Aquatec 8800 booster pump PSI Setting

[MERKEY]

Just installed the 8800 on my 7 stage 75gpd system. It bumped my psi from 30-35 to a steady 95... Use to take 4 hours for 5 gallons with the low pressure. Bow takes less than 1 hour!

I know I can reduce the pressure but before I do I wanted to ask what you guys run your booster pumps on average?

50 range
60 range
Or is it ok to just run it at 95psi lol

 

[Huff747]

I think BRS did a few videos on it but I can't find the right one right now. I think they suggest the efficiency is better when it's a bit higher (maybe 75 is what they tested) but suggested staying below 90 because some of the housings may leak above 90. I set mine to ~80.

 

[MERKEY]

I think BRS did a few videos on it but I can't find the right one right now. I think they suggest the efficiency is better when it's a bit higher (maybe 75 is what they tested) but suggested staying below 90 because some of the housings may leak above 90. I set mine to ~80.

Thanks!!

Just looked them up and you are right, they did the experiment under different PSI and 50-70 is optimal and wont over use your resins.

I tried to reduce the 8800 as low as it will go and it hits 75-80. So It will not run lower hahah

Thanks again for your response!!

 

[mfinn]

I run mine at about 87-88psi

 

[MERKEY]

I run mine at about 87-88psi

That's what I like to hear

 

[mfinn]

And it's been that way for about 5+ years

 

[JoshH]

My household pressure floats between 85-90 with no issues for the last few years. And if I had lower pressure I'd buy the pump to keep it at that point.

 

[MERKEY]

And it's been that way for about 5+ years

The only down side that I read is that the higher PSI uses up the resins faster.

What size GPD RO unit do you have and how often have you had to replace resins/filters?

My household pressure floats between 85-90 with no issues for the last few years. And if I had lower pressure I'd buy the pump to keep it at that point.

What GPD unit do you use? The lower GPD suggests to stay lower around 50-60PSI.

My unit is only a 75GPD...I tried to lower the 8800 as low as it could go but it sits around 75PSI.

The only down side I believe would be faster resin/filter usage....I am probably wrong tho lol

 

[JoshH]

The only down side that I read is that the higher PSI uses up the resins faster.

What size GPD RO unit do you have and how often have you had to replace resins/filters?

What GPD unit do you use? The lower GPD suggests to stay lower around 50-60PSI.

My unit is only a 75GPD...I tried to lower the 8800 as low as it could go but it sits around 75PSI.

The only down side I believe would be faster resin/filter usage....I am probably wrong tho lol

With a quality membrane I can only think the quicker resin depletion is purely from the fact your pushing more water through the resin than before. It's not higher TDS or anything, theres just more of it to process. I've yet to hear anything about this phenomenon myself but not saying it doesn't happen. Even if it did, the rise in TDS would be negligible at best and shouldn't increase DI consumption any noticeable amount....

My system is a Spectrapure 180 GPD setup (Dual 90GPD Membranes), with a system incoming PSI of around 85-90 as mentioned previously and about 45 PSI going into the second membrane (Membranes plumbed in series). Brings my 245-270 TDS water down to 1 after both

 

[MERKEY]

With a quality membrane I can only think the quicker resin depletion is purely from the fact your pushing more water through the resin than before. It's not higher TDS or anything, theres just more of it to process. I've yet to hear anything about this phenomenon myself but not saying it doesn't happen. Even if it did, the rise in TDS would be negligible at best and shouldn't increase DI consumption any noticeable amount....

My system is a Spectrapure 180 GPD setup, with a system incoming PSI of around 85-90 as mentioned previously and about 45 PSI going into the second membrane (Membranes plumbed in series). Brings my 245-270 TDS water down to 1 after both

That's my initial thoughts as well, just more water being pushed through at a faster rate no uptake in TDS

 

[mfinn]

The only down side that I read is that the higher PSI uses up the resins faster.

What size GPD RO unit do you have and how often have you had to replace resins/filters?

I have a 100gpd ro filter.
I don't see how it could use it up faster other than you are pushing more water through it and getting more product water.
For years and years it seemed like it would take 6-7 months ( or more) to go through a canister of di resin.
Then a couple years ago it seemed like I was burning through a canister every other month, so I started paying attention to the multiple threads on the issue and saw the BRS take on using a 3 canister approach.
So I switched over to it and now I'm getting much longer use out of a canister of mixed resin.
I still don't think it was as good as what I once had, but it's better than it was last year.

 

[Nate h]

I run my pump at 80-85 psi. And have a tds meter after the membrane. With the pump on my tds is about 1/3 to 1/4 of it with the pump off. Makes for a much more efficient membrane. And I make water about 2 1/2 times as fast so it is just the amount of water that would use it up faster.