RO booster pump

[Tab28]

I am looking to add a booster pump to my RO filter. It is a 110 or 120 gpd, not sure which one. What difference does the pump make? I see they are rated by the gpd of your system but I do not understand what difference the pump makes.

 

[NaplesAquatics]

Increased pressure improves the efficiency of the membrane, within the specs of the membrane of course. You may get an increase in volume, but usually you maximize the membrane specs. Or can power a second membrane.

Jeff

 

[AZDesertRat]

There is no such thing as a 110 or 120 GPD membrane, you must have an ebay system which are famous for bogus claims.
What you probably have is a 75 GPD system at 50 psi regardless if its a Dow Filmtec, GE Water or other brand of membrane. Worst case you could have a 100 GPD Dow Filmtec nano filter system which I hope is not the case since they are only 90% efficient versus 96-98% for the 75.

Regardless, the booster pump you need is the Aquatec 8800, its designed for a 100 GPD system and the 6800 is for a 50 GPD system so will not keep up.

Boosters increase the GPD, increase the rejection rate or removal efficiency saving you tons of money and reduce the waste ratio so you don't waste as much water.

I would be very cautious with off brand RO booster pumps, Aquatec is the standard of the industry and has been doing this for years and years while some of the knock off imports have only been around a few years at most. Shop wisely, some vendors do not include things like the 24v DC power supply or pressure switch so the prices look low until you read the fine print. Expect to pay around $125- $150 complete.