Welcome to Koi Forum. Is this your first visit? Register
Results 1 to 6 of 6
  1. #1
    Member Rank = Nisai twokoi's Avatar
    Join Date
    Aug 2018
    Location
    Poulton le Fylde
    Posts
    73
    Thanks / Likes
    93

    UV Sleeves breaking

    I have 2 UV's on my system. Every year when changing the UV tubes I would attempt to remove the Quartz Sleeve to check if it needs cleaning and every year as soon as soon as I try to unscrew the locking nut there is a cracking sound and another quartz sleeve bites the dust so it's a new sleeve again. So this year i'm only changing the tube and leaving the sleeve alone. The irony of it is that whenever I removed the sleeve it didn't actually need cleaning! Has anyone else had this problem? Or am I just ham fisted! The UV's in question are an EA and a TMC.



  2. #2
    Senior Member Rank = Jussai davethefish1's Avatar
    Join Date
    Apr 2019
    Location
    Bedworth
    Posts
    1,173
    Thanks / Likes
    2597
    when you replace the quartz sleeve use a very light smear of silicone lubricant, and wipe the excess off.
    on the threads, as well as the o rings, but don't over tighten!

    as the silicone will make over tightening easier, but disassembley much easier...

    i think the probelm is slightly over tightening the locking nuts. and the rubber o rings adhere to the nut and glass sleeve.
    then when you undo them the sleeve gets a twisting force applied to it...
    The Solution to Pollution is Dilution

  3. #3
    Member Rank = Nisai twokoi's Avatar
    Join Date
    Aug 2018
    Location
    Poulton le Fylde
    Posts
    73
    Thanks / Likes
    93
    Thanks for that I have put vaseline on the o rings but propably over tighten the locking nut. The TMC is at least 10 years old and the last time i replaced the sleeve I couldn't find a sleeve of the right length they were all about an inch to long. I ended up trying shorten one, it sort of worked but now i have one end of the sleeve with a jagged edge. I intend to replace the TMC for a something newer next winter.

  4. #4
    Senior Member Rank = Supreme Champion Ajm's Avatar
    Join Date
    Mar 2018
    Location
    Durham
    Posts
    6,630
    Thanks / Likes
    13767
    Ea are a mare for smashing like hate them lol

    Sent from my F5121 using Tapatalk
    Johnathan

  5. #5
    I had a similar problem and eventually found it was caused by the O Rings being undersized allowing the end nuts to nip the tube, The O rings were supplied loose by a koi dealer but when compared to the genuine ones they were a fraction thinner so I now make sure I buy the genuine parts only.

  6. Thanks Ajm Thanked / Liked this Post
  7. #6
    Extreme Koi Member Rank = Sansai maplekoi's Avatar
    Join Date
    Mar 2013
    Posts
    113
    Thanks / Likes
    112
    if they are tmc units there are two different size o rings make sure you get the right ones otherwise you will crack the sleeve
    1 set is 29mm dia x 4mm the other is 29.5mm dia x 3mm

  8. Thanks twokoi Thanked / Liked this Post
 

 

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
  •  
All times are GMT +1. The time now is 12:50 PM. Online Koi Mag Forum
Powered by vBulletin® Version 4.2.3
Copyright © 2021 vBulletin Solutions, Inc. All rights reserved.

vBulletin Improved By vBFoster® (Lite Version), © UltimateScheme, Ltd.