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Thread: Correct flashback arrester

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  1. #1
    Join Date
    Dec 2016
    Posts
    4

    Angry Correct flashback arrester

    Hi can enyone help my find the correct flashback arresters for my oxygen and propane set up as I have brought one but it does not have an high enough pressure for my little smiths torch as the arrester only goes up to 5 bar in propane and need to be able to have a arrester that will go up to at least 10 bars but can not find one at all

  2. #2
    Join Date
    Dec 2014
    Location
    South Australia
    Posts
    1,087

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    Little torch does not operate anything like 10 bar more like 3-4 Bar

  3. #3
    Join Date
    Dec 2016
    Posts
    4

    Default

    Quote Originally Posted by china View Post
    Little torch does not operate anything like 10 bar more like 3-4 Bar
    The torch instructions say you need 5-9 bars for different tips on the manual for propane

  4. #4
    Join Date
    Jul 2009
    Location
    Romsey
    Posts
    4,823

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    I've just read through the instructions from Smiths and can find no reference to 5-9 bar. All I've seen is 13.7 - 48.3kPa (for both O2 & fuel - although there's a later reference to 55.2kPa for the #7 tip) across the range of single & dual tips.
    5bar supplying even a Sievert and you'll struggle to get & keep it lit.

    http://www.smithequipment.com/files/...63357a_mil.pdf
    Last edited by ps_bond; 27-05-2017 at 12:47 PM.

  5. #5
    Join Date
    Feb 2014
    Location
    Manchester
    Posts
    632

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    Yes, for tip numbers 2 to 7 the psi range is 2 to 8.
    8 psi is significantly less than one bar.

    One of the reasons I got the following regulator is that you can see roughly what pressure the fuel is running at:
    http://www.rapidwelding.com/dynamic/...x?c=H1384&zl=2
    Last edited by Aurarius; 27-05-2017 at 07:43 PM.

  6. #6
    Join Date
    Dec 2016
    Posts
    4

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    [QUOTE=Aurarius;94634]Yes, for tip numbers 2 to 7 the psi range is 2 to 8.
    8 psi is significantly less than one bar.

    One of the reasons I got the following regulator is that you can see roughly what pressure the fuel is

    Thank you I have been looking for one like this for ages but I've already got one but it doesn't have a gauge but when I get some more money I'll defiantly invest in this one already waisted money on one that didn't fit so can't afford to buy another one

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