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Author Topic:   torch question
thebomb
Dirt Maniac

Total posts: 149
posted May 14, 2005 11:02 AM  
have you guys heard of the flame traveling up the torch hose back to the bottle, i had a little scare last night, my ole lady was out in the garage with me and said "hey is that thing supposed to do that"? and to my surprise there was a flame coming from between the male fitting and female end that goes into the pressure valve, at first i thought i had forgot to tighten it when i filled it last but it was tight. you guys ever seen anything like this? thanx for anyhelp

MiPinto6
Dirt Maniac

Total posts: 118
posted May 14, 2005 02:05 PM  
That can be caused by to low of an operating pressure.

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Thanks, Rob
(Cold Blooded Racing)

15a
Dirt Freak

Total posts: 354
posted May 14, 2005 06:29 PM  
I think they make check valves for the lines to prevent this.

25Tank
Dirt Newbie

Total posts: 2
posted May 23, 2005 01:29 PM  
Scary is right! Our race shop burnt down in July 2003 from this very thing. Did not have the quick release style one way check valves in(at that time, but sure do now) Turns out there were some pin holes in the hoses themselves and when I shut off torch, it didn't "pop" just right, but didn't think much of it. Walked inside the house(about 100 feet away) for cold drink and come out and it was all over! the flame was whipping out of the hose about 6 feet from tank regulators and no way to get to it and shut off. Still makes me sick to think about it. Overkill now..if I see a speck or smudge of grease on a hose, I'm checking close or replacing it. Thank goodness for State Farm (didn't cover everything, but most)

sc1 racing
Dirt Freak

Total posts: 419
posted July 15, 2005 10:58 PM  
our shop burnt to the ground 2 weeks ago..fire marshall said the cause was a leaking cutting torch and a blow from my hammer..that was the scariest chit ive ever went through..

purestock71
Dirt Roller

Total posts: 17
posted July 16, 2005 06:55 AM  
Most of the time when there is a flame at the gauge it is not back flow that causes it, it is a bad bottle, where the connection does not seat good and a spark hitting it, being a welder we go through several bottles each month and have a problem like this every now and then. Also if the torch is old replace the check valves, always better to be safe.

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