[H2GoKent]

As the title says my water pressure is a weedy 42psi.
Can anyone recommend an RO for me.
I have had a 450gpd from Pure freedom but its nearly dead and I plan to upgrade.
Years ago I used a merlin but the low pressure meant it made water at 66ppm!

Is the new version better? Don't want to use a booster pump really.
My tap water is a chalky 460ppm.

Any ideas? Cheers

[Frankybadboy]

MATE JUST BITE THE DUST AND BUY A BOOSTER FOR £100 NEW OFF PUREFREEDOM.

MAKE ALL THE DIFFERENCE

[Don Kee]

If you stick the booster after the ore filters and before the membranes there shouldnt be as much crap passing through your booster if thats what your worried about??

[Alex Gardiner]

As the title says my water pressure is a weedy 42psi.
Can anyone recommend an RO for me.
I have had a 450gpd from Pure freedom but its nearly dead and I plan to upgrade.
Years ago I used a merlin but the low pressure meant it made water at 66ppm!

Is the new version better? Don't want to use a booster pump really.
My tap water is a chalky 460ppm.

Any ideas? Cheers

You have two main options:

1. Switch to an Ultra Low Pressure membrane such as the HF5 membranes. These can produce water at down to 20psi input pressure. However on a TDS of 460ppm these membranes would need to be flushed very regularly perhaps 10 minutes for every hour of use. Alternatively fit a softener before the RO.

2. Fit a booster pump and use standard type membranes such as the HF4 type membranes. These can work well down to about 45-/50psi without a pump but under that they ideally need a pump. This set-up would not need flushing as often perhaps only 30  minutes per week with a 5 minutes flush before each production cycle.

[H2GoKent]

Thanks foryour help on this will ponder while the wind blows and the rain falls.