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Popping or snapping cutting torch!

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Ken

03-22-2003 16:54:27




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My cutting torch just started snapping or popping with cutting. It will continue to snap all the while you are using it. It is fueled by LP. Any suggestions?




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Leroy

03-30-2003 07:02:36




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 Re: Popping or snapping cutting torch! in reply to Ken, 03-22-2003 16:54:27  
Tempature will also cause that



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Ken

03-25-2003 18:23:29




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 Re: Popping or snapping cutting torch! in reply to Ken, 03-22-2003 16:54:27  
Thanks guys for the replies. The tip was loose on on the torch head. I took the tip off, cleaned it, reassembled it, no more popping.



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Deas Plant.

03-23-2003 02:50:39




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 Re: Popping or snapping cutting torch! in reply to Ken, 03-22-2003 16:54:27  
Hi, Ken. All of the other replies are right in that they can cause popping of your torch. However, Thurlow touched on what I have found to be the most common cause of persistant popping, a poor seal between torch and tip. Sometimes this can be caused by a bit of dirt between the surfaces and a simple clean will solve the problem.

Other times, one face or the other, or both, will be damaged and repairs/re-seating will be needed.
Remove the tip from the torch, clean it with a clean rag, amking sure that no lint is left behind and inspect both the seal ring on the tip and the seat in the torch very carefully for any signs of damage.

If there is MINOR damage, you can sometimes repair it yourself by using a TINY amount of valve grinding paste applied to the seal ring on the tip and rotating the tip against the seat with the retaining nut screwed in far enough to ensure that the tip is held true to the seat.

The one BIG 'must' about using this method is that have to be sure that ALL the valve grinding paste is removed before using the torch again. Cotton tips or buds, the little cotton balls on sticks, are handy for this. This is also the reason for the emphasis on the 'TINY' above. The less valve grinding paste you use, the less it will spread.

You may prefer to invest in a re-seating tool or take the torch to your local service center.

Hope this helps.

You have a wonderful day. Best wishes. Deas Plant.

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Butch

03-22-2003 21:29:30




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 Re: Popping or snapping cutting torch! in reply to Ken, 03-22-2003 16:54:27  
If its LP you will need a fine steel brush check your pressure on LP sounds like to much pressure



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thurlow

03-22-2003 17:58:23




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 Re: Popping or snapping cutting torch! in reply to Ken, 03-22-2003 16:54:27  
Sounds like a seal failure somewhere in the system; I'd look first at the tip; sometimes just loosening the nut and rotating the tip a little and retightening the nut will clear it up. Not something I'd want to take any chance with if I couldn't get it to quit.



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Jack

03-22-2003 17:52:54




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 Re: Popping or snapping cutting torch! in reply to Ken, 03-22-2003 16:54:27  
Sounds like you have slag up in the tip. Try cleaning it with a set of tip cleaners.



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Ray,IN

03-22-2003 19:28:20




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 Re: Re: Popping or snapping cutting torch! in reply to Jack, 03-22-2003 17:52:54  
Yessir! If you don't keep your tips clean you'll be buying lots of them. There are many causes, the solution is a good(they do wear out) set of tip cleaners.



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Marty

03-23-2003 01:03:38




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 Re: Re: Re: Popping or snapping cutting torch! in reply to Ray,IN, 03-22-2003 19:28:20  
The most common cause of popping method is holding the tip of the torch too close to the molten steel puddle. This can cause the puddle to boil and explode. It will also cause molten metal to blow back inside the tip causing blockage. Assuming your tip is clean and the fuel pressures are set right. First set the fuel mixture, there should be small crisp brite blue flames at the base of the flame when the mixture is right. Keep these small flames about 1/8 inch away from the metal, this will eliminate blow back problems. Tip cleaning: Run a flat file in a criss cross pattern across the tip. Then use a tip cleaner to clear the holes.Also some LP tips are two piece and can be taken apart for cleaning. Looking at the side and top views of the flame while you press the cutting oxygen valve you should observe a nice straight line of oxygen blowing through the flame with a sound like tearing paper.

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Rayinny

03-30-2003 14:02:07




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 Re: Re: Re: Re: Popping or snapping cutting torch! in reply to Marty, 03-23-2003 01:03:38  
Anti back fire valves should prevent the regulator from blowing up if a bak fire occures.



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