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  1. #1
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    A pipe contraction



    Hi ewerybody.

    Is somebody have the problem of steel pipe damage due to temperature contraction? Is there any experience with the use of temperature compensators or enough bends?

    I cant find information about that.



  2. #2
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    Re: A pipe contraction

    Download this document on installation, it may help.
    http://bit.ly/2sOgRwQ
    Brian, retired in Devon.

  3. #3
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    Re: A pipe contraction

    Thanks, is it okay for ammonia pipe?

  4. #4
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    Re: A pipe contraction

    What pipe are you using? If steel then yes.

    The pipe doesn't know what's inside only the temperature.

    Any components, bellows etc, check with the manufacturer.
    Brian, retired in Devon.

  5. #5
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    Re: A pipe contraction

    Hi, Den123

    Quote Originally Posted by Den123 View Post
    Hi ewerybody.

    Is somebody have the problem of steel pipe damage due to temperature contraction? Is there any experience with the use of temperature compensators or enough bends?

    I cant find information about that.
    Usually, for refrigeration is not necessary to install thermal expansion joints ... just take care to use elbows and supports to allow contraction&expansion of pipes ... also take care about branch pipes to have a possibility for free move ...

    it is much more used within steam lines ... pipe contraction and expansion is much bigger ...

    It is more convenient to use thermal expansion joints to reduce vibration and noise (using piston compressors) or if you have pipes passing from one building to another in active seismic areas ... like Costa Rica.

    I used them three times only as in above examples ... two times within ammonia refrigeration plants (first time to avoid vibration&noise, second time in Costa Rica and third time for steam lines in UAE...



    Best regards, Josip
    Last edited by Josip; 07-07-2017 at 09:39 PM.

    It's impossible to make anything foolproof because fools are so ingenious...

    Don't ever underestimate the power of stupid people when they are in large groups.

    Please, don't teach me how to be stupid....
    No job is as important as to jeopardize the safety of you or those that you work with.

  6. #6
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    Re: A pipe contraction

    Hi, FaultCode..

    Quote Originally Posted by FaultCode View Post
    Download this document on installation, it may help.
    http://bit.ly/2sOgRwQ
    thanks for sharing ... good brochure..


    Best regards, Josip

    It's impossible to make anything foolproof because fools are so ingenious...

    Don't ever underestimate the power of stupid people when they are in large groups.

    Please, don't teach me how to be stupid....
    No job is as important as to jeopardize the safety of you or those that you work with.

  7. #7
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    Re: A pipe contraction

    Thanks, Josip.
    Could you give me a manufacturer of this joints and we need a calculation for pipe (contraction or increase).
    What type of that joint must be for ammonia liquid and vapour?

  8. #8
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    Re: A pipe contraction

    Hi Den123

    Quote Originally Posted by Den123 View Post
    Thanks, Josip.
    Could you give me a manufacturer of this joints and we need a calculation for pipe (contraction or increase).
    What type of that joint must be for ammonia liquid and vapour?
    Unfortunately, I cannot help you with manufacturer - I used those joints back in the year 2000 and earlier ... you need to search WEB by yourself ...

    The best is to download brochure ... link sent by FaultCode ... and then start at page 4 .... with calculation/s ... quite simple ...

    Usually bellows https://www.tunersports.com/vibrant-...bly_mp882.html

    are of SS material and you can use the same type of joint both for gas or liquid ammonia .... of course with proper supports ...


    Best regards, Josip

    It's impossible to make anything foolproof because fools are so ingenious...

    Don't ever underestimate the power of stupid people when they are in large groups.

    Please, don't teach me how to be stupid....
    No job is as important as to jeopardize the safety of you or those that you work with.

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