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Tool Talk Discussion Forum

OT-Plumbing

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Hal

03-25-2004 17:36:40




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I have to sweat some 1" quarter turn valves, 1" fittings and "L" tubing. Will a hand held propane torch cut the mustard with this? I don't think so but am not sure. I've never had a problem working with 1/2" and 3/4" regular fittings and propane but have noticed that with a heavy 3/4" valve it takes a lot of heat. The 1" Nibco valves seem to have a lot of mass. Should I buy a MAPP torch? I also have a basic Oxy-acetelyne outfit on a cart with single stage regulators. Could I get a length of hose and use some kind of acetelyne torch head with that, or can you use propane with oxygen?

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TOMDUALLY

03-26-2004 22:01:22




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 Re: OT-Plumbing in reply to Hal, 03-25-2004 17:36:40  
TURN IT ALL THE WAY UP AND GO FOR IT,-- JUST KEEP ABOUT 90% OF THE HEAT ON THE FITTING AND KEEP MOVING IT AROUND THE THE FITTING AND WHEN IT SUCKS IN THE SOLDER BETWEEN THE PIPE AND THE FITTING, IT'S HOT ENOUGH. I'VE DONE 3" PIPE WITH A HAND HELD PROPANE TORCH, JUST TAKE YOUR TIME AND SPREAD THE HEAT EVENLY AROUND THE FITTINGS. (I AM A RETIRED PLUMBER)



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Tim B

03-26-2004 19:47:55




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 Re: OT-Plumbing in reply to Hal, 03-25-2004 17:36:40  
Maybe I am missing something, but I use my old run of the mill, cheap propane torch with a cylinder of MAPP gas. It is noticbly hotter, but other than that, no diff from propane that I can tell. Except the MAPP gas costs a about twice as much or more.



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Mark

03-26-2004 10:26:48




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 Re: OT-Plumbing in reply to Hal, 03-25-2004 17:36:40  
On the question of propane vs acetylene. I switched about 20 years ago because of availability. I traded my acetylene tank in on a second oxy tank and with a ready supply of heating propane I am in business. Really seems my propane lasts longer as I use the little 5# bottle and don't remember the last time I changed it out.

I bought a propane tip (larger holes for the #) and works just fine. I use about 3-5 psig of gas to 30 psig oxy. I like lots of oxy to blast the slag away on thicker materials. Could use 10 psig but I have learned to prefer the higher value.

Disadvantage is that is takes longer to start the cut. The blue dagger tips need to touch the cutting material and after a few seconds, you will see the tiny pinpoint melts and then you can smack her with oxy. Once you get her going, you can back the tip off 1-2" from the work and it will continue to cut, as long as you keep the melt running.

Would not go back.

Mark

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Joe Evans

03-25-2004 19:39:14




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 Re: OT-Plumbing in reply to Hal, 03-25-2004 17:36:40  
The standard old run-of-the-mill hand held propane torch will work just fine. Used one for a good portion of my major house remodeling. I will grant you that the 1" stuff will take longer to bring up to temp, but if you don't have that much to do, then I would not go to the extra expense of a different torch.

You oxy-acetylene outfit will work even better. Just don't wind up the O2 very much. Do you have a heating tip for your cutting torch?

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Russ

03-25-2004 18:10:56




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 Re: OT-Plumbing in reply to Hal, 03-25-2004 17:36:40  
I would use the oxy-acetalene torch with a small brazing tip, I think it would work the best. I have a Mapp gas torch and it is quite hot but it goes out just about when you are ready to put the solder to the joint, very frustrating. Use low lead solder if it is potable water, and it takes more heat.



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