RO setup question

Discussion in 'Biological/Natural Filtration and Deep Sand Beds' started by Subaman, 6 Sep 2015.

  1. Subaman

    Subaman

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    Hi, so I have one of those white RO systems with the two filters hanging below, and the two horizontal canisters above.

    My question is regarding the bigger horizontal canister, it has a connector on one end for the incoming feed, and then 2 outgoing connections on the other end.
    One of these 2 connectors looks like it has some sort of valve in it.
    is this the drain connection, or the good water connection?

    Thanks
     
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  3. mornewil

    mornewil Morne

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    Drain. Valve is to flush membrane to keep clean
     
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  4. Subaman

    Subaman Thread Starter

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    Thanks, but just to clarify, I am not talking about the on/off valve, which is for the drain.
    But which outlet on the membrane does that connect to?
     
  5. mornewil

    mornewil Morne

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    Flow restrictor connects to inner outlet
     
  6. viper357

    viper357 Admin MASA Contributor

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    Easiest way to tell is to plumb the unit in and run it, the pipe where the water comes gushing out is the drain and the one where the water dribbles out is the RO water.
     
  7. TheWaterboy

    TheWaterboy Sponsor

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    are you referring to the little check valve inside the elbow??

    if so...that is the ro outlet
     
  8. viper357

    viper357 Admin MASA Contributor

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    Maybe this pic will help

    [​IMG]
     
    Last edited: 7 Sep 2015
  9. Subaman

    Subaman Thread Starter

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    Yep, that's it, the check valve in the elbow.

    Gee, is that the RO outlet, how long does it take to fill an 800 litre tank?
     
  10. mornewil

    mornewil Morne

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    Depends on how may liters per day your unit can make. I have the same 4 stage ro unit as u describe yours. Mine took about 2 days to fill up my 500L tank
     
  11. Subaman

    Subaman Thread Starter

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    And the drain water is just waste?
    Or should it be re-routed again?
     
  12. Subaman

    Subaman Thread Starter

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    Oh wait, must the drain tap be closed while filling up the tank?
    Possibly a stupid question!
     
  13. TheWaterboy

    TheWaterboy Sponsor

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    yes...but its not a top if a flow restriction flush valve, so even when "closed" water will come out
     
  14. Dexter

    Dexter

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    Many people use it to fill a pool or to water the garden. Others just leave it to run into the drain
     
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