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Cattle Boards
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1/10 Acetylene withdrawal rule.
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<blockquote data-quote="504RP" data-source="post: 1802921" data-attributes="member: 40335"><p>I have no idea for sure what could have caused that to happen. But it might and again there's no way of knowing unless someone checked the amount of acetylene that was in the bottle after the fire.</p><p></p><p>The bottle could have been close to empty, and maybe the guy withdrew the last of the gas at a rate that caused the torch to withdraw acetone along with the remaining acetylene that was left in the bottle. If that happened the acetone/low acetylene mixture would be like a moisture mist instead of gas to causes the torch to start popping and burn back through the torch, hoses and regulator that could have caught the hose and regulators on fire.</p><p></p><p>Wonder how he got the fire out ? More than likely he turned the bottle's off fast enough. Read that the regulator's can somehow shut of themselves once they catch fire but sometimes if they don't the fire travels past the regulators that can cause the bottles to explode.</p><p></p><p>From what I read and the way I understand it. Once the acetylene gage reads almost even zero pressure the torch will still light and cut. And that's the point that acetone can start flowing out along with the acetylene and cause flash backs.</p><p></p><p>So if the guy who your talking about was trying to finish a cutting project and was using a bottle that was close to empty before he started and maybe thought he would use the remaining what little gas that was in the bottle. Before getting a new full bottle. That might have been what could have happened. If that was what happened I could see where flash back arrestors could have prevented it.</p></blockquote><p></p>
[QUOTE="504RP, post: 1802921, member: 40335"] I have no idea for sure what could have caused that to happen. But it might and again there’s no way of knowing unless someone checked the amount of acetylene that was in the bottle after the fire. The bottle could have been close to empty, and maybe the guy withdrew the last of the gas at a rate that caused the torch to withdraw acetone along with the remaining acetylene that was left in the bottle. If that happened the acetone/low acetylene mixture would be like a moisture mist instead of gas to causes the torch to start popping and burn back through the torch, hoses and regulator that could have caught the hose and regulators on fire. Wonder how he got the fire out ? More than likely he turned the bottle’s off fast enough. Read that the regulator’s can somehow shut of themselves once they catch fire but sometimes if they don’t the fire travels past the regulators that can cause the bottles to explode. From what I read and the way I understand it. Once the acetylene gage reads almost even zero pressure the torch will still light and cut. And that’s the point that acetone can start flowing out along with the acetylene and cause flash backs. So if the guy who your talking about was trying to finish a cutting project and was using a bottle that was close to empty before he started and maybe thought he would use the remaining what little gas that was in the bottle. Before getting a new full bottle. That might have been what could have happened. If that was what happened I could see where flash back arrestors could have prevented it. [/QUOTE]
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1/10 Acetylene withdrawal rule.
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