Anyone use a 4021 RO unit?

[marc674]

I currently use a 300 gpd ro unit(150gpd plus 150gpd upgrade kit) from ro man. Wanting to change to something that will produce water quicker and cut down on waste water. My tap pressure is 60psi and tds in around 140. Been looking at a 4021 ro unit. Is anyone using one of these ? Would this still perform well without a booster pump? How quick can these produce pure water ? Any advice would be great. Thanks

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[doug atkinson]

With your tap pressure you will get around a litre every 50 secs so no need to use a booster pump.

 

[Den]

Following this thread as I'm thinking of getting a 4021 this summer due to smaller size space saving, my tap pressure is 65 psi and around tds 295

 

[marc674]

Thanks doug that sounds good. What pure to waste ratio should I get from this unit ?

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[doug atkinson]

I normally set it to 45% pure 55% waste but would not go any more then 50 %

 

[marc674]

Thanks doug this seems the way to go for what I need

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