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Brass corosion

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Red

12-15-1999 15:12:22

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I haven't used my torch in quite a few years and now all three adjustment knobs can barely turn. I tried liquid wrench and no change so now am thinking of taking them apart and first try oil and if that dosen't work try to clean them. They are brass, not rusted? Please,does anybody have any suggestions? Thanks a heap!

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catblaster

12-20-1999 19:03:22

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Re: Brass corosion in reply to Red, 12-15-1999 15:12:22

Hey Red, just in case you haven't gotten the point yet I have first hand experience at an oxygen-oil explosion. An old iron worker pulled up to the jobsite with his rig in the back where a coffee can full of bolts soaking in oil had tipped over and ran across the nipple on the oxy regulator. In a hurry he screwed the reg's to the bottles and when he opened the oxy valve, it exploded the regulator. Not a pretty sight, the meat on his forearm looked like a pork rib barbeque. The last time I saw him the medics took him away. Another instance involved a "helper" thinking that his journeyman could use a little fresh air put the oxy hose inside the pipe where his journeyman was grinding the inside welds. We had to pay a death benefit for that one. Sure hope you"ve gotten the point, you got beaten up pretty good on this one.

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More safety... NO COPPER PIPE EITHER !

12-16-1999 12:05:24

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Re: Brass corosion in reply to Red, 12-15-1999 15:12:22

While we are on the topic.

NEVER NEVER route acetylene through
copper pipe. (like plumbing an
acetylene header into your shop)

Acetylene + Copper = copper acetate = violent explosion.

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Tom S.

12-16-1999 06:45:59

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Re: Brass corosion in reply to Red, 12-15-1999 15:12:22

OK. Excuse my ignorance, but like the gentleman here, I have seen and heard the warnings about oil on a gas torch, probably all my life, but never any other explanation why. I know the regulators say NO OIL on them, and I just thought it was a fire hazard to have oil around the heat of the torch or on the rig, or any combustable in the general vicinity for that matter. Why else will the O2 explode? I think I have missed something important here. I can't recall ever doing it, but if presented with the same situation as this fellow, I probably would have grabbed my spray bottle with WD-40 in it also. Tom S.

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Dan

12-16-1999 06:58:12

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Re: Re: Brass corosion in reply to Tom S., 12-16-1999 06:45:59

Oxygen and Oil mixed together will explode. You stated that you had seen the warning not to use oil on the regulators It means that. Oil and oxygen will make a big fire, and explosion. You do not see people that give Demo's on Fire Safty use this mixture because it is very explosive. They know what Gas will do as well as the other material will do.You have a reaction time. I guess you could say mix the two together and have fun with the TNT instantly. No Reaction time.

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Bill From Ontario

12-16-1999 08:48:08

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Re: Re: Re: Brass corosion in reply to Dan, 12-16-1999 06:58:12

In fact, this mixture is so volatile, that you should never point a torch at someone's head, because the oil in the hair is enough to support combustion.

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Tom S.

12-16-1999 11:40:19

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Re: Re: Re: Re: Brass corosion in reply to Bill From Ontario, 12-16-1999 08:48:08

I knew that O2 readily supports combustion, and all the hazards involved using this in medical settings, but I thought welding grade gasses were not as absolute pure like what was being used during Apollo 9 or whatever that cindered those astronauts. I know that with concentrations of O2 all that is needed is only a minor amount of heat, and practically anything will become fuel and support open combustion. I just never thought those welding gasses were that volatile! All the heat and sparks and all. This is the reason I come to this site. Another lesson learned. Tom S.

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Fm.....appolo 13

12-17-1999 19:04:06

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Re: Re: Re: Re: Re: Brass corosion in reply to Tom S., 12-16-1999 11:40:19

I remember not because i was around(I wasn't)_ but I seen a show on TLC abotu it. it was really unlucky. apollo 13, 13 tons of solid rocket fuel, 13 of this, 123 of that....

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Warren - CLARIFYING THE APOLLO STORY!

12-20-1999 13:03:31

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Re: Re: Re: Re: Re: Re: Brass corosion in reply to Fm.....appolo 13, 12-17-1999 19:04:06

Wow, I think you guys are off the subject here. A little clarification is in order:

1. Apollo 1 spacecraft experienced a fire which claimed the lives of Virgil Grissom, Ed White, and Roger Chafee in 1967.

2. Apollo 13, with James Lovell, John Swigert, and Fred Haise, was launched April 11, 1970. The spacecraft experienced a "malfunction" caused by the rupture of an oxygen canister with localized damage to fuel cells - no lives were lost, but the mission was aborted.

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Steve U.S. Alloys

12-16-1999 04:42:18

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Re: Brass corosion in reply to Red, 12-15-1999 15:12:22

Hi Red,
Shouldn't of used that oil, huh. If you e-mail me I'll tell you what to do now if interested. Include the manufacturers name and model # from the torch.

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Jerry B

12-15-1999 19:28:06

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Re: Brass corosion in reply to Red, 12-15-1999 15:12:22

PLEASE READ THIS CAREFULLY: DO NOT under any circumstance use your torch-even with liquid wrench on the valve stems. This is close enough to 'oil' that it could explosively combust in the presence of compressed gas-especially oxygen. This explosive combustion could cause your lines and even the tanks to explode. I've seen the results of one such explosion: one dead, several injured, & $$$$$$ in damages.

As per the advice below, take the torch and anything else in the gas stream, such as the regulators & lines, to a welding supply shop for service. Be sure to tell them you have used an oil-based material on the valves so they can be properly cleaned & made to work again. This is an inexpensive way to stay alive.

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Bill From Ontario

12-15-1999 15:16:40

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Re: Brass corosion in reply to Red, 12-15-1999 15:12:22

Do not under any circumstances use oil. The torch will blow apart in your hand. Take it to your local welding supply store, and let someone with experience service it.

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Dan

12-15-1999 17:37:53

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Re: Re: Brass corosion in reply to Bill From Ontario, 12-15-1999 15:16:40

If Red wants to stay in the chat circle he would not MIX OIL AND OXYGEN together. He would be the next NASA Launch, before he could say Oh No. I dont know you but PLEASE DONT USE OIL ON THE VALVES. A lot of people misuse the Oxygen and Acetalyne rigs and have a big mishape useing them. I have seen people laying the Acetalyne bottle down and using it. That draws the Acetone out of the bottle and it then eats the o'rings out of the torch valves and head.

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Ernie

12-15-1999 17:35:09

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Re: Re: Brass corosion in reply to Bill From Ontario, 12-15-1999 15:16:40

Good advice

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