Installing Bulkhead Tips

Discussion in 'Equipment, Lighting, Hardware, Aquarium Filtration' started by AZDesertRat, Jan 10, 2010.

  1. tcp316

    tcp316 Member

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    Thank you! I will try that. I am hoping the gasket is usable.
     
  2. AZDesertRat

    AZDesertRat Well-Known Member R2R Supporter R2R Excellence Award

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    Never use a lubricant or sealant, it inhibits the rubber vulcanizing process which is much of the seal.
     
  3. tcp316

    tcp316 Member

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    Thanks

    Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
     
  4. Munch

    Munch Well-Known Member

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    Went to Lowe's and HD, this is what they had, any one of the three a winner?

    IMG_0046.jpg
     
  5. tcp316

    tcp316 Member

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    I've used the Oatley

    Sent from my Transformer Prime TF201 using Tapatalk HD
     
  6. AZDesertRat

    AZDesertRat Well-Known Member R2R Supporter R2R Excellence Award

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    I also have some of the Oatey in my toolbox but prefer the stick versions as it is much thicker. You might try Ace Hardware, I bought my last stick there and its probably the LaCo brand private labelled for Ace.
     
  7. BeardedReefer

    BeardedReefer Well-Known Member

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    This is directly from gl*******s installation instrucions:

    10.
    If you have some silicone plumber’s grease (
    Magic Lube
    ), squeeze a tiny bit on the gaskets,
    just a nice little film. I like to use as little as possible to cover the entire gasket. I like to put a
    dab on the bulkhead threads, as well. You don’t really have to do this step, but I feel better
    about the whole deal when I do, and it makes future disassembly easier.
     
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  8. AZDesertRat

    AZDesertRat Well-Known Member R2R Supporter R2R Excellence Award

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    I would completely disagree, clean and dry is you best option. Lubricants on the gaskets inhibit the vulcanizing process or the rubber not to mention causes them to scoot out of place and distort. Also lubricants on the jamb nut threads allow it to loosen up with the slightest movement which is something you don't want. I stand by my suggestions based on 38 years in the water operations and maintenance industry, seen a lot of them over the years.
     
  9. Engloid

    Engloid Well-Known Member VRJ Member

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    I've done a lot of mantainence work in my career also... and some things to consider: You put antiseize on bolt threads and they don't untighten with any small bump. The argument I have heard on not using lubricants on bulkheads that makes most sense is that it can end up resulting in overtightening and breaking the nut. I typically install a bulkhead with threads outside so that I don't get any buildup on the threads...and getting it off later isn't ever a problem. As for lubrication on the threads causing the gasket to shift...that would likely only happen if the gasket is not sized properly or you overtighten. I think it's just a preference matter, really...not so much a right and wrong. It can be done either way, without problems, or done either way with problems resulting.
     
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  10. BeardedReefer

    BeardedReefer Well-Known Member

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    Agreed, And I always thought that was the whole point to the design of "Tapered Threads"???
     
  11. Engloid

    Engloid Well-Known Member VRJ Member

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    Tapered threads are typically used when threads are used to make the seal....usually needing teflon tape or pipe dope. Bolt or straight threads are for squeezing an item or more than one item together.
     
  12. AZDesertRat

    AZDesertRat Well-Known Member R2R Supporter R2R Excellence Award

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    The outside threads on a bulkhead are not NPT or tapered threads so do not get tighter the more you turn the nut. As Engloid said, they are more like bolt threads with no taper so depend on the nut to stay tight thus the suggestion to not use any sealants or lubricants, clean and dry. You will experience more problems with a lubricated gasket versus a clean, dry gasket guaranteed.
     
  13. containerman1

    containerman1 Well-Known Member

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    great tips
     
  14. justgotwet

    justgotwet Well-Known Member

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    Thanks for sharing that info.
     
  15. Vwtbug

    Vwtbug Well-Known Member

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    Azdesertrat is 100% right
     
  16. Dtech07

    Dtech07 SPS LOVER!!!

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    Good read thanks
     
  17. hllywd

    hllywd Well-Known Member

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    The second gasket that comes with the kit must be used between the overflow box, and the tank. The first one goes behind the flange. As has been stated many time, a gasket never goes next to the nut no matter the bulkhead's orientation.

    I'm from the camp that likes a film or silicon plumbers grease on the gasket, and a dab of Oatley Teflon paste on the pipe threads of theaded bulkheads.
     
  18. hllywd

    hllywd Well-Known Member

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    I use the Oatley.
     
  19. vetteguy53081

    vetteguy53081 Well-Known Member

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    No Loctite. Plumber's items are best
     
  20. AZDesertRat

    AZDesertRat Well-Known Member R2R Supporter R2R Excellence Award

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    None of those tubes of paste is comparable to the PVC lubricant sticks. I have the Oatey too but use it for a different purpose. If you have not tried the LaCo or similar stick type PVC thread lubricant you will be very surprised at how well it works.

    Nothing is needed on the nut, it will stay tight under normal use by itself and things like paste or teflon will actually make it loosen up and Loctite will make it hard to remove, defeating the purpose.
     

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