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#1
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Is map gas compat with propane for sweating?
I've never used map gas for sweating copper and brass. My
understanding is that it is much hotter so is it okay for 1/2" and 3/4" copper fittings? Can I use the same flame adjuster from the propane tank on the map gas tank? Any other advice working with map gas? Thanks. |
#2
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Is map gas compat with propane for sweating?
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#3
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Is map gas compat with propane for sweating?
"Joseph Meehan" wrote in message ... wrote: I've never used map gas for sweating copper and brass. My understanding is that it is much hotter so is it okay for 1/2" and 3/4" copper fittings? Can I use the same flame adjuster from the propane tank on the map gas tank? Any other advice working with map gas? Thanks. I believe you need a different head for MAP and I am not sure it would be the best choice for ½ inch fittings. I may be a tad too much. -- Joseph Meehan Dia 's Muire duit Propane is fine for 1/2 copper fittings - at least in my limited experience. It only takes like 20 seconds to heat a joint up - maybe 30 tops. That's nothing. When you don't know much about soldering pipes, like myself, it helps having a lower flame temp - too much heat and the joint is ruined before you even get the solder on it. |
#4
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Is map gas compat with propane for sweating?
On Mar 2, 11:16�pm, "Eigenvector" wrote:
"Joseph Meehan" wrote in message ... wrote: I've never used map gas for sweating copper and brass. *My understanding is that it is much hotter so is it okay for 1/2" and 3/4" copper fittings? *Can I use the same flame adjuster from the propane tank on the map gas tank? *Any other advice working with map gas? *Thanks. * *I believe you need a different head for MAP and I am not sure it would be the best choice for ½ inch fittings. *I may be a tad too much. -- Joseph Meehan Dia 's Muire duit Propane is fine for 1/2 copper fittings - at least in my limited experience. It only takes like 20 seconds to heat a joint up - maybe 30 tops. *That's nothing. *When you don't know much about soldering pipes, like myself, it helps having a lower flame temp - too much heat and the joint is ruined before you even get the solder on it. I use mapp for 1/2 lines, it just heats faster. you do need a different torch head, oddly enough mine mapp is non adjustable for flame control. home depot doesnt carry a adjustable one |
#5
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Is map gas compat with propane for sweating?
you do need a different torch head, oddly enough mine mapp is non
adjustable for flame control. home depot doesnt carry a adjustable one -------------------------------- I use the same torch for both. It seems to work out okay. What is the the difference? |
#6
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Is map gas compat with propane for sweating?
Toller wrote:
you do need a different torch head, oddly enough mine mapp is non adjustable for flame control. home depot doesnt carry a adjustable one -------------------------------- I use the same torch for both. It seems to work out okay. What is the the difference? I would guess they each require a different gas/air mixture for ideal operation. -- Joseph Meehan Dia 's Muire duit |
#7
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Is map gas compat with propane for sweating?
Toller wrote: you do need a different torch head, oddly enough mine mapp is non adjustable for flame control. home depot doesnt carry a adjustable one -------------------------------- I use the same torch for both. It seems to work out okay. What is the the difference? MAPP gas is made by combining liquefied petroleum gas with Methylacetylene-Propadiene. MAPP gas burns hotter than propane. IIRC, propane is close to 4000 degrees, while MAPP is about 5300. You need a certain amount of heat to properly sweat a joint. If you use propane on a 1/2" fitting, you can get there. With the lead free solder, you need a bit more heat so MAPP gas willl get you there faster, expecialy on larger joints. While it is possible to overheat a joint, if the flame is hotter, you merely hold the torch a bit further away and heat it for less time. |
#8
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Is map gas compat with propane for sweating?
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#9
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Is map gas compat with propane for sweating?
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#10
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Is map gas compat with propane for sweating?
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#11
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Is map gas compat with propane for sweating?
Doug Miller writes:
For anyone who does not already own a torch, and is trying to decide between propane and MAPP, my advice is to go with MAPP. The MAPP torch costs about $18 to $20 more, but IMO it's well worth it in the time saved. The gas costs more per bottle, too, but I suspect that's probably a wash in the long run, because you don't need to use nearly as much MAPP to heat a fitting as you do propane; you may even come out ahead in that respect with MAPP. You may also be able to burn propane in the MAPP torch. I have a Turner "swirl torch" that will burn either fuel; there's a regulator adjustment you make when changing fuels. I find that it produces more heat from propane than a regular propane torch, though not as much as when burning MAPP. I tend to do copper pipe soldering using propane in the swirl torch. There was one time recently when I wished I'd switched to MAPP: I was soldering a 1/2" side branch into a 3/4" tee. There was a brass valve on the 1/2" pipe already, and the 3/4" tee had a brass valve on one side and a pressure regulator on the other side, so plenty of mass to suck heat away from the joint. And there was a slow drip of water into the joint, which was continually being turned into steam. Despite all this, the propane *did* get it hot enough to solder - it just took a while. Dave |
#13
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Is map gas compat with propane for sweating?
Someone mentioned ruining a joint due to too much heat. What exactly
happens? Does the copper just turn black and not adhere to the solder? |
#14
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Is map gas compat with propane for sweating?
wrote in message oups.com... Someone mentioned ruining a joint due to too much heat. What exactly happens? Does the copper just turn black and not adhere to the solder? I've done it... I think you ruin the flux so it is not effective in preventing the copper from being oxidized, as it normally would be from the heat. |
#15
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Is map gas compat with propane for sweating?
wrote in message oups.com... Someone mentioned ruining a joint due to too much heat. What exactly happens? Does the copper just turn black and not adhere to the solder? Pretty much, you burn out the flux and start to oxidize the surface. MAPP get hotter faster so you have to know when to put the solder to the joint and then take the heat away. Any torch can over heat a joint, and even natural gas can be used to braze with if you have the right setup with oxygen. |
#16
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Is map gas compat with propane for sweating?
I've found to touch the solder to the joint from the very first
instant when I apply heat. When the joint is cold, it won't do anything. Finally the joint hits the magic temperature, and the solder flows. My early mistake was to heat the fitting too hot, and then apply the solder too late. I always got a pinhole leak. Now, I apply the solder from the first instant. Mapp gas works nicely for water copper soldering, but propane is just fine. -- Christopher A. Young You can't shout down a troll. You have to starve them. .. "Edwin Pawlowski" wrote in message t... : : Pretty much, you burn out the flux and start to oxidize the surface. MAPP : get hotter faster so you have to know when to put the solder to the joint : and then take the heat away. Any torch can over heat a joint, and even : natural gas can be used to braze with if you have the right setup with : oxygen. : : |
#17
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Is map gas compat with propane for sweating?
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