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Where to buy 6mm copper tube?

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  • ozscott
    replied
    True. Thanks rrm. Cheers

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  • rrm
    replied
    If you were in Melbourne I'd give a couple of meters. I have an almost full roll of 1/4 soft .91 wall. in the workshop.

    The tyranny of distance.

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  • ozscott
    replied
    Where to buy 6mm copper tube?

    Yes i agree. I need about 39cm but A. I dont know any fridgies; B. I dont want to roll up and randomly ask one for some; and C. My machine needs a full clean and descale and there are quite a few 6mm runs given it's a volumetric machine with flowmetres x2 so if i need more it's there ready to roll. Funnily enough i an ennealed the butchered piece i had and reflared the top and its in and holding pressure nicely BUT i dont trust the fitting in the long run and prefer to do a fresh piece.

    Thanks for your help.

    Cheers
    Last edited by ozscott; 18 January 2016, 12:22 AM.

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  • koshari
    replied
    How much copper are we taliking here? Surely you're only after a few inches? A foot at most? Any fridgy tradey round here would just dock a bit off a roll and some wouldn't even charge you for it.

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  • ozscott
    replied
    Many thanks mate!

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  • rrm
    replied
    No problem according to this:

    http://standards.nsf.org/apps/group_...1/nsf51-97.pdf

    7.3.1 Copper and copper alloys shall not be
    used in a food zone except where exposure to food
    is limited to potable, non-carbonated water under
    constant service pressure. Exceptions to this
    requirement are specified in 7.3.2 for brass and
    bronze and in 7.3.3 for copper-nickel alloys
    7.3.3 Copper-nickel alloys may be used in a food
    zone where exposure to food is clearly and
    specifically limited to non-acidic foods and
    beverages (i.e., food and beverages with a pH of
    6.0 or greater)
    So my reading of the standard is that cupro nickle tube should be OK with water or steam.

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  • ozscott
    replied
    Thanks guys. Does Nickel cause any problems for food use?

    Cheers

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  • rrm
    replied
    Originally posted by jbrewster View Post
    Geez, the refrigeration mobs in BNE must be tight bastards, I've never had any drama getting short lengths of copper tubing (soft or hard drawn) from the guys down here at decent prices.
    The other option is to collar any split system installer. Either at an installation site or at the suppliers. Most would have tails of 1/4 : 1/2 pair coil in their vehicles. However some of the imported copper is absolute junk and crimps while you look at it.

    I's hard to beat the Australian made Kembla .91 wall copper tube.

    6mm Brake bundy tube, from a brake place is OK but it's not copper. It's cupro nickel and heavier wall. Copper is banned from brake use because vibration can work harden the fittings and cause failure.

    l

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  • jbrewster
    replied
    Geez, the refrigeration mobs in BNE must be tight bastards, I've never had any drama getting short lengths of copper tubing (soft or hard drawn) from the guys down here at decent prices.

    Leave a comment:


  • ozscott
    replied
    Thanks all. I ended up with soft easy bend 6mm copper from the UK. I rang a few refrigeration places today and they only had 15 metre lengths for $135 plus!. For about $17 Au delivered i got 1.5m which is much better. So i will get the MAP and silver solder out and go to work. Iove keeping the machine running. She is about 30 years old. She is actually due for a full strip and descale.
    Cheers and thanks

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  • Dimal
    replied
    Yep...

    Any Refrig. shop should have a lot of short lengths of various sizes Oz,
    It will nearly all be hard drawn copper so will have to anneal before flaring...

    Mal.

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  • mulquemi
    replied
    ozscott,
    Stainless tubing can be either TIG welded (expensive machinery,correct technique demanding though) silver soldered with oxy/acet (easier for most people).
    I recently sourced some insulated 6mm annealed copper piping from refrigeration fitter mate for our caravan fridge installation,just strip away the covering and you have beautiful bright copper.
    I generally use >15% silver rated solder however,lesser percentage work fine too.
    Hope that helps,
    Cheers,
    Mick.

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  • rrm
    replied
    Any refrigeration supply company

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  • alexm1
    replied
    Ozscott, I bought some years ago at a brake specialist. They usually use steel to avoid the expansion that can occur with copper but those that work on boat trailers in particular usually have copper.

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  • ozscott
    replied
    Looks like I can get 1.5m of easy flare copper pipe from the UK delivered for $16 AU...

    Cheers

    Leave a comment:

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