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Thread: Flowmeter size for homemade RO.

  1. #11
    Join Date
    Feb 2019
    Location
    Murrysville, Pennsylvania
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    104

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    Yep - I think you will be happier with the higher throughput rate of that configuration and it won't cost you much more.

  2. #12
    Join Date
    Feb 2019
    Location
    Murrysville, Pennsylvania
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    104

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    Good article on the details of reverse osmosis:
    https://puretecwater.com/reverse-osm...everse-osmosis

    Has a good diagram of the 2 stage set-up I was referring to:
    RO_Membrane_One_Two_Stage.jpg

  3. #13
    Join Date
    Jan 2014
    Location
    Akron Ohio
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    21

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    Tapped 36 in Summit County yesterday the 15 day forecast looks good.

  4. #14
    Join Date
    Mar 2008
    Location
    West Falls, NY
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    135

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    Quote Originally Posted by jrgagne99 View Post
    Does anyone know when the 400 gpd membranes arrived on the scene? I don't remember seeing them when I made my first RO system back in 2007. I believe 100 gpd was the max at that time. The 400's must use a different canister than the 150's right?
    Looks like the 400s use a 3 inch housing where the 150s use a 2 inch.

    For what its worth, i use a system exactly like what the OP is showing. I run it at about 100 to 120 psi with 150 gpd membranes. My sap is usually about 1.5 to 1.75% and I can get it to almost 6% in one pass. Often during the week i will run the concentrate back into the holding tote and slowly get the whole batch to about 7.5 to 8%.

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