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Old 11-08-2010, 04:52 PM   #16
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Acetylene tank, how to know if full?


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Originally Posted by Lockeset View Post
Yes, there is the square shank that needs to be turned the open the tank, then a regulator and gauge. The gauge said full. Does that mean that the tank is full? If so, I'll save a lot of money by just using it to solder what I need. To go out now and buy all the MAPP equipment will cost quite a bit for a couple of joints.
If the gage is reading correct yes it's full, now to get the gas to flow you need to adjust the regulator by turning it.. do you understand? And do you have the right torch and tip to complete the job.?

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Old 11-08-2010, 05:13 PM   #17
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Acetylene tank, how to know if full?


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If the gage is reading correct yes it's full, now to get the gas to flow you need to adjust the regulator by turning it.. do you understand? And do you have the right torch and tip to complete the job.?
Yes, it has a torch and tip, the man I bought it from said it was for that size pipe.

I remember using the regulators back in school using oxygen and acetylene. With my setup today, since there is only one gas, what is the point of the regulator? Just open it and start working?
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Old 11-08-2010, 06:59 PM   #18
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Acetylene tank, how to know if full?


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Acetylene mixed with pure oxygen will burn at 5000 degrees plus. Enough to melt steel. An acetylene torch that uses atmopheric air as an oxydizer (like a plumber's Turbo Torch) will burn cooler, but still plenty hot enough to solder or braze. MAPP gas burns approximately equal in temperature to acetylene, but is contained and transported as a liquid, rather than a compressed gas like acetylene. If you have a good bottle and regulator and a decent torch, then use it. Just be careful. It doesn't take long to overheat a copper fitting with an acetylene torch.
Googling, it seems mapp with air is not hot enough to melt brass rods. Needs oxygen to braze with. But I'll keep it in mind if I need to braze something in the future.

Thanks,
HRG

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