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Tool Talk Discussion Forum

Re: Oxygen Bottle Replacement

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Keith Molden

01-28-2013 05:37:08

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I agree, but tend to dissagree with you. If you check, you will find every answer from 1/4 turn to 1 1/2 turns. The purpose of only opening the acetylene valve a short distance is so it can be closed with a twist of the wrist. When I was teaching welding it was 1/4 turn. We also taught that you never drained the acetylene pressure down all the way as it would let the acetone drain off possibly creating a void in the suspension material. The gas acetylene will become self explosive at 29.4 p.s.i. At least that's what we taught in the 70s & early 80s. things might have changed from then to now. Just my thoughts, Keith

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Stick welding

01-28-2013 10:57:35

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 Re: Oxygen Bottle Replacement in reply to Keith Molden, 01-28-2013 05:37:08  
I said never open more than 1 1/2 turns but usually about 1/4 turn is enough. Somevalves have to be opened more though.

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Stick welding

01-28-2013 11:02:18

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 Re: Oxygen Bottle Replacement in reply to Stick welding, 01-28-2013 10:57:35  
I should have added that unless you're using a rosebud, you usually get too small of flame before the acetone will leak.

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01-28-2013 09:04:19

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 Re: Oxygen Bottle Replacement in reply to Keith Molden, 01-28-2013 05:37:08  
When I bought my torch back in 1979 I was told to only open the A one full turn and the O full open. Also was told never run the A down to less than 25# because it would damage the cylinder. The O all it will do when it is run empty is the high heat will stop and just the A will keep on burning. Have had that a few times. Just used for farm repairs.

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