Toms top tips from than award :-)

Discussion in 'Plumbers' Talk' started by Copper Dragon, Feb 21, 2010.

  1. Guest

    you tube toms channel some Italian guy says something has happened to tom then he does a johnny cash number
     
  2. Itandje

    Itandje New Member

    He looks a bit like that fella in the godfather.....








    ...no, not Al Pacino....James Caan before the undertaker smartened him up. :^O
     
  3. Teuchter

    Teuchter New Member

    Nameless, brainless one, why should I be embarrassed to be a history teacher?
     
  4. Guest

    teach you are obviously full of bull and a day dreamer
     
  5. Guest

    you havent got a clue if you are a plumber or central heating engineer why dont you say so or is all from some book
     
  6. Teuchter

    Teuchter New Member

  7. Guest

    full of bull then
     
  8. Guest

    a armchair plumber
     
  9. Dick Puller

    Dick Puller New Member

    Did I really write that in 06 Mantie la??!! Sorry about that, I was doing a serious amount of 'Charlie' back then.
     
  10. Teuchter

    Teuchter New Member

    ***, it's I'm <u>an</u> armchair plumber.

    twit
     
  11. Dick Puller

    Dick Puller New Member

    I love reading History books DA............But it's always said that only the winners write the History books!!!
     
  12. Itandje

    Itandje New Member

  13. Dick Puller

    Dick Puller New Member

    That's a bit of a worry, you keeping that Mantie la. No one becomes my official stalker, unless they have complete the application form!!
     
  14. Itandje

    Itandje New Member

    Rest your pretty little head *, everything we write on here is retrievable through the search button.

    [Edited by: admin]
     
  15. Dick Puller

    Dick Puller New Member

    Don't be ashamed Mantie la, you'll not be the first person that's a bit star struck by the Master.
     
  16. Onetap

    Onetap Member

    The recommended procedure is detailed in here;

    http://www.ukcopperboard.co.uk/literature/pdfs/Installation-Tips/Pressure-testing-piping-systems.pdf

    "Pressure testing of pipelines should normally be carried out using water. Only in exceptional circumstances should pneumatic pressure testing using compressed inert gas or air be used, and then only under carefully controlled conditions."


    You deviate from the industry-standard recommended procedure at your peril (and that of everyone in the vicinity). If you disagree with this, don't complain to me, take it up with the CDA (and HVBCA, HSE, CIBSE, ASHRAE, etc., whose recommendations are all similar.

    The reasons why a contractor/plumber would start pressure testing with water are that;

    1) they do not have a test pump, they are DIY bodgers;
    and 2) they do not understand pressure testing;

    Professionals do a hydraulic pressure test.
     
  17. Onetap

    Onetap Member

    "Copper and plastic pipe and fittings would never shatter, and god knows what pressure you'd need to shatter something like a rad valve. The only danger I can see is a flying endcap, so as long as a bit of common sense is used what's the problem?"

    The only danger you can see is a flying endcap? Off you go, take your footpump and the best of British to you in all your endeavours.

    I'm going to use some big words here, so Itandje and the other time-served half-wits had better skip this bit, lest they learn something.

    First, it is not copper pipe, it is tube. Calling it pipe marks you as an amateur.

    You'd wouldn't expect a copper "pipe" or fitting to shatter because, as supplied, copper is ductile. You would expect it to undergo plastic deformation, rather than shatter. Table X (sorry can't be 'rzed' to look up the EN tables) is half-hard, Table Y is soft annealed. Table Z is rarely used, it is hard drawn and is less ductile, it is more brittle; it is not suitable for bending.

    The thing about copper is that it work hardens; you work it when you bend it. When it has become hard, you have to anneal it or it will break if you carry on working it. You could have a pulled bend or stressed pipe that was work hardened and liable to a brittle fracture. There remains the danger of a fitting coming loose.

    I find it disturbing that a 'professional plumber' should be so ignorant of the properties of copper. I am not surprised.

    You would expect plastic to be plastic. Some plastics become hardened and brittle on exposure to sunlight (notably ABS, used for compressed air, formerly used for crash helmets). PTFE is weakened by being kinked. The danger is that a pipe break or fitting coming loose will allow a flexible pipe to whip around.
     
  18. Onetap

    Onetap Member

    That should be;

    "The reasons why a contractor/plumber would start
    pressure testing with air are that;
     
  19. tomplum

    tomplum Active Member

    are you fick or summut onetap,,we already know the dangers, and as already explained to you 10000000000times, when you test with water, the water is pushing the air against the fittings, so you are testing with air anyrode,
     
  20. Itandje

    Itandje New Member

    First, it is not copper pipe, it is tube. Calling it pipe marks you as an amateur.

    Yeah I sometimes call 15mm fittings 1/2 inch and 40mm waste inch and a half...ain't I just a *.

    The thing about copper is that it work hardens; you work it when you bend it. When it has become hard, you have to anneal it or it will break if you carry on working it. You could have a pulled bend or stressed pipe that was work hardened and liable to a brittle fracture. There remains the danger of a fitting coming loose.

    You're quoting stuff any kid learns in college, but if you honestly think that copper pipe and fittings or plastic pipe and fittings are going to fragment instead of rupturing you're not in the real world. Pulled bends or not. A fitting coming loose??dangerous how exactly, it's not going to fail at both joints if it's a straight or an elbow, or at all 3 if it's a tee, get a grip.

    The danger is that a pipe break or fitting coming loose will allow a flexible pipe to whip around.

    Hahaha, this is your best one yet, if that hit you on the * that would really really sting. It's not like it's an anchor chain snapping ya daft *.

    Finally what you still don't seem to have realised ...no one gives a *.


    [Edited by: admin]
     

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