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If you get a blow back with oxygen- acetylene equipment, which valve do you close first?

21 May '17, 05:40

May 21, 2017, 5:40 a.m.
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Answer:

Close Oxygen valve first. This will cut off oxygen to internal flame. Blowback is when flame travels back up hose to cylinder. Possible causes are tip to close to metal, incorrect pressure, obstruction in tip.

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21 May '17, 05:42

May 21, 2017, 5:42 a.m.
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