LP v Acetylene?

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I'm planning on converting my torch to LP.  I'm going to use LP for heating and cutting.  I want to start learning to oxy-fuel weld.  So I'm going to save the acetylene for the welding.  I've ordered an LP regulator and cutting tips.  I have a T grade hose on my torch already.  Do I need to buy a separate hose for LP?  I was told there are a lot of impurities in LP and if I intended to weld with the torch also I would need a separate hose to prevent the impurities from getting into the weld.  Is this true?  Eventually I'd like to have a full setup for LP and one for Acetylene.  ThanksMiller Maxstar 200 strMontgomery Ward 250 AC/DC
Reply:T grade is designated for all fuels. I have never heard of propane being "dirty" and would not have any doubts about running T grade for both fuels.
Reply:What type of welding do you plan to do with OA that might require really "clean" welds? I guess if I was building my own airplane frame using OA I might be a bit concerned with impurities causing issues with the welds, but the average home welder isn't doing critical welds with OA on average. If the cup holder you welded up for the tractor breaks, or if the yard art falls apart, it's no big deal..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Originally Posted by DSWIf the cup holder you welded up for the tractor breaks
Reply:Never went the LP route yet.I'll be interested to hear your thoughts. The only time I use a cutting head is for doing slots. Drill 2 holes, burn between. I'ts actually fairly often but O/A is so fast it doesn't waste fuel. Anyone here use LP with a rosebud ? Bending 3/8 x 4 or something ?  The guys here use the same regs and the old style hoses with LP. They only buy tips. Never heard of any problem at all.Bubble gumTooth pixDuct tapeBlack glueGBMF hammerScrew gun --bad battery (see above)
Reply:Originally Posted by CEPOh really?! When ever my coffee spills, and I have to head back to the house for another cup, that is a calamity!
Reply:Originally Posted by BurpeeAnyone here use LP with a rosebud ?
Reply:If the cup holder you welded up for the tractor breaks, ....
Reply:Propane might meet your cutting needs. The scrap yard here uses nearly all propane oxy.They bring out the Acetylene for the real heavy hardened stuff like old rock quarry or concrete factory equipment.old Miller spectrum 625 Lincoln SP-135 T, CO2+0.025 wireMiller model 250 and WP-18V torchCraftsman 100amp AC/DC and WP-17V torchCentury 115-004 HF arc stabilizerHome made 4 transformer spot welderHome made alternator welder
Reply:Guess I should not listen to salesmen!  Why I asked here first!  Thanks.
Reply:I first used propane for cutting when I used to haul scrap.Still use it - just cut up some railroad track pieces to make an anvil too. No problems I don't notice any "dirty" issues when using acetylene for welding.I have a propane rosebud, but usually just use the cutting tip to heat with.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:I have a propane set up that I have been using for over 20 years in my home shop. Only thing I changed was the tip to convert it. I just use it for heating and cutting, not welding. 100 lb bottle of propane out lasts 6 oxygen bottles. Since I am the only one to use it, even the tip lasts for years. Funny how they last when not used as a hammer.
Reply:Yes propane will go way longer than Acetylene. The limiting factor with Acetylene is you can only compress it so much before it explodes.old Miller spectrum 625 Lincoln SP-135 T, CO2+0.025 wireMiller model 250 and WP-18V torchCraftsman 100amp AC/DC and WP-17V torchCentury 115-004 HF arc stabilizerHome made 4 transformer spot welderHome made alternator welder
Reply:Originally Posted by ZapzooI'm planning on converting my torch to LP.  I'm going to use LP for heating and cutting.  I want to start learning to oxy-fuel weld.  So I'm going to save the acetylene for the welding.  I've ordered an LP regulator and cutting tips.  I have a T grade hose on my torch already.  Do I need to buy a separate hose for LP?  I was told there are a lot of impurities in LP and if I intended to weld with the torch also I would need a separate hose to prevent the impurities from getting into the weld.  Is this true?  Eventually I'd like to have a full setup for LP and one for Acetylene.  Thanks
Reply:I have been running Propylene for years, no need for acetylene unless your welding. You can run a silver dollar size rose bud off a 30 pounder and only worry about the regulator freezing up.Disclaimer; "I am just an a$$hole welder, don't take it personally ."
Reply:Uh, guys?He's talking about LP (liquified petrolium) gas. That is not the same a propane.Propane is a pure product that gives very consitant results.LP is natural gas that has been compressed and cooled so it can be handled in the same way as propane. Natural gas is a mixture of many fuels and impurities. Being a natural product, its biggest advantage is that its cost-per-unit-of-heat is close to #2 fuel oil.LP is a very poor choice for welding and I would definitely use a separate hose for acetylene.Be wary of The Numbers: Figures don't lie,. but liars can figure.Welders:2008 Lincoln 140 GMAW&FCAW2012 HF 165 'toy' GTAW&SMAW1970's Cobbled together O/A
Reply:Originally Posted by mike837goUh, guys?He's talking about LP (liquified petrolium) gas. That is not the same a propane.Propane is a pure product that gives very consitant results.LP is natural gas that has been compressed and cooled so it can be handled in the same way as propane. Natural gas is a mixture of many fuels and impurities. Being a natural product, its biggest advantage is that its cost-per-unit-of-heat is close to #2 fuel oil.LP is a very poor choice for welding and I would definitely use a separate hose for acetylene.
Reply:Whups, My Bad (sorta).I was confused over the fact that LPG is NOT natural gas. However LPG is not propane either. Propane is the pure product. LPG is mostly propane and contains butane along with other petrochemicals.None of these fuels should be confused with each other or the equipment needed to extract the energy stored in the various steel cylinders.Be wary of The Numbers: Figures don't lie,. but liars can figure.Welders:2008 Lincoln 140 GMAW&FCAW2012 HF 165 'toy' GTAW&SMAW1970's Cobbled together O/A
Reply:Originally Posted by mike837goWhups, My Bad (sorta).I was confused over the fact that LPG is NOT natural gas. However LPG is not propane either. Propane is the pure product. LPG is mostly propane and contains butane along with other petrochemicals.None of these fuels should be confused with each other or the equipment needed to extract the energy stored in the various steel cylinders.
Reply:. . .However LPG is not propane either. Propane is the pure product. LPG is mostly propane and contains butane along with other petrochemicals.None of these fuels should be confused with each other or the equipment needed to extract the energy stored in the various steel cylinders.
Reply:Originally Posted by denrepNothing to distinguish, equipment, gas, cylinders, all the same at the user level.
Reply:Originally Posted by mike837goNot quite!The cylinders used on a forklift use the same acme thread as home BBQ tanks. But the forklift ones draw LIQUID from the bottom and deliver it unregulated to the machine's carburetor.The BBQ (and welding) tanks draw GAS from the top and use a regulator to deliver very limited amounts of fuel to the appliance/tool.Generally, the tanks are given different looks and/or fittings to prevent accidental incorrect connections. Does anybody remember that many fuel gas tanks use a left-hand thread?
Reply:All of the LP fork truck that pulled liquid from the tank did not have the same fitting as a BBQ tank. They look close but they are not the same and they will not interchange, they are made that way so you can not put a liquid draw tank on a gas draw tool or the other way around.Joe
Reply:Originally Posted by InsanerideI thought it was the Oh two that did the cutting xothemic reaction from the oxy or something like that. Acet or propane just warm things up I think
Reply:Originally Posted by denrepNothing to distinguish, equipment, gas, cylinders, all the same at the user level.