Need an RO Guru's help, Permeate pump vs Booster Pump

[RobbyG]

I use an AIW Ro system and decided to hook it up to an external 3 gallon Pressure tank. My water pressure is between 40-46lbs at the Tap, after my RO membrane I have about 6 TDS and of course zero after DI. After doing the hookup I noticed that the TDS after the RO membrane shot up to as high as 80 as the Tanks back pressure increased.

I have read adverts that say a Permeate pump will Isolate the Tanks pressure and keep the tds from rising and also save me from using wads of DI resin. The problem is all the posts I have read on the subject seem to suggest that Permeate pumps do nothing and I should get a booster pump instead.

Now with a booster pump I will have about 90lbs going in and the FULL Tank may create a back pressure of about 30lbs, so the membrane will be seeing 90-30 = 60lbs of forward pressue at all times, will this also have the desired effect of lowering the TDS after the membrane or should I get the Permeate pump?

Has anyone had a positive experience with Permeate pumps?

Thans guys for any help.

 

[RobbyG]

Bump, need help.

 

[purelyh2o]

Booster pump

Booster pump

Permeate pumps are cool but Im still sketchy as to the overall results. A booster pump will increase the pressure which will give you lower TDS, less waste and just a smoother running system. The Aquatec pump is adjustable and does not have to run at 90 psi. You can also adjust the pressure switch to shut off at a lower pressure.

My Vote? - Booster Pump


Good luck

 

[RobbyG]

Thanks for the info Bryan.
Anybody else has some more advice or first hand info?
Where's AZdesertrat, Aquaman when you need them?