+ Reply to Thread
Results 1 to 3 of 3

Thread: RO Membrane Direction

  1. 02-06-2019, 10:12 PM #1
    plabarr
    plabarr is offline Fire Wood Chopper plabarr is on a distinguished road
    Join Date
    Feb 2016
    Location
    Schroon Lake NY
    Posts
    14

    Default RO Membrane Direction

    I'm new to ROs and I have a unit that takes a 4x40 membrane. I got a Dow XLE-4040 membrane and it has a gasket/O-ring on one end but not the other. Could someone tell me which way that o-ring is supposed to face? Feed side or permeate/concentrate side, or maybe it doesn't matter. Thanks for the help!
    Reply With Quote Reply With Quote
  2. 02-07-2019, 05:25 AM #2
    bowhunter's Avatar
    bowhunter
    bowhunter is offline Maple Addict bowhunter is on a distinguished road
    Join Date
    Feb 2013
    Location
    Marysville, Ohio
    Posts
    663

    Default

    The o-ring is the brine seal and is supposed to face the feed side. If it's installed the other way it may not seal properly.
    Leader 1/2 pint - Kawasaki Mule - Smoky Lake Filter Bottler
    24 GPH RO, 2 1/2 x 40 NF3 (NF270), 140 GPH (Brass with no relief valve ) ProCon pump
    2013 - 44 taps - 16 gallons syrup, 2014 - 109 taps - 26 gallons syrup
    2015 - 71 taps - 13.5 gallons syrup, 2016 - 125 taps - 24.25 gallons syrup
    2017 - 129 taps - 17.5 gallons syrup, 2018 - 128 taps- 18 gallons syrup
    2019 -130 taps - 18.5 gallons syrup, 2020 ~125 taps-19.75 gallons syrup
    Reply With Quote Reply With Quote
  3. 02-07-2019, 08:27 PM #3
    plabarr
    plabarr is offline Fire Wood Chopper plabarr is on a distinguished road
    Join Date
    Feb 2016
    Location
    Schroon Lake NY
    Posts
    14

    Default

    Thank you.
    Reply With Quote Reply With Quote
+ Reply to Thread
« Previous Thread | Next Thread »

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Forum Rules