Cutting torch problem

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Bright Raven
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Re: Cutting torch problem

Postby Bright Raven » Sun Jul 29, 2018 2:59 pm

greybeard wrote:
Bright Raven wrote:
Nesikep wrote:I'd try backing the regulator off, take the glass off the line side, remove the needle and replace it with it at zero, then air it back up.. see if that fixes it.
Our Victor kit is nearly 30 years old and works well, replaced a few gauges now though


I tried to isolate where on the regulator the air was coming from. It was not coming from the opening into which the LP guage screws in. Could the oxygen be leaking under the lens of the guage? I could feel the air but could not narrow down exactly where it was coming from. I thought that was odd. I thought it would be around one of the threaded attachments.


I suspect the regulator allowed the line gauge to over pressurize and the innards of the gauge blew...usually, the C shaped bourdon tube leaks..

Depending on size and shape, the orange plastic thing may also be an orifice plate or insert that is sometimes used in the gauge inlet to dampen or slow the bourdon tube's movement.


Ok. I am thinking this needs to be rebuilt.
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Nesikep
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Re: Cutting torch problem

Postby Nesikep » Sun Jul 29, 2018 3:01 pm

if it was a piece of crap from something external, just a cleaning will fix it
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Re: Cutting torch problem

Postby greybeard » Sun Jul 29, 2018 3:20 pm

Nesikep wrote:if it was a piece of crap from something external, just a cleaning will fix it

That is true as well.
Possible too, that it is nothing more than a blown gauge.
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Re: Cutting torch problem

Postby Nesikep » Sun Jul 29, 2018 3:37 pm

I'm thinking something caused the gauge to blow, overpressure would be #1 culprit considering it's stuck way up there.. find the root cause then replace the gauge
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Re: Cutting torch problem

Postby Caustic Burno » Sun Jul 29, 2018 4:24 pm

Nesikep wrote:I'm thinking something caused the gauge to blow, overpressure would be #1 culprit considering it's stuck way up there.. find the root cause then replace the gauge


X2 blown gauge.
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Re: Cutting torch problem

Postby greybeard » Sun Jul 29, 2018 4:32 pm

Nesikep wrote:I'm thinking something caused the gauge to blow, overpressure would be #1 culprit considering it's stuck way up there.. find the root cause then replace the gauge

Probably so, considering that gauge shouldn't 'see' anywhere near that much pressure unless someone cranked the regulator in all the way to the stop or the regulator failed.

With the regulator adjustment backed almost all the way out, (you will be able to feel when the spring tension is off of it) & the regulator connected to the pressure source, you should be able to slowly open the tank valve and find there will be nothing coming out either the hose port or from the hose gauge port.
(make sure there is no oil, grease or open flame in the immediate vicinity when you do this)
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Re: Cutting torch problem

Postby slick4591 » Sun Jul 29, 2018 4:35 pm

While you are here... What's happening when your torch pops and the flame goes out?
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Re: Cutting torch problem

Postby Bright Raven » Sun Jul 29, 2018 4:39 pm

slick4591 wrote:While you are here... What's happening when your torch pops and the flame goes out?


I did not try to lite it when I found out it was leaking. It was a sufficient enough leak that I could hear it well and my hearing is not good! So I don't know.

I used it 2 days ago and it worked fine. I think Nesi and GB are correct- the LP guage blew that is why I could not trace the leak, it was coming out all around the lens.
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Re: Cutting torch problem

Postby greybeard » Sun Jul 29, 2018 5:12 pm

slick4591 wrote:While you are here... What's happening when your torch pops and the flame goes out?

You thinking a blowback? Hopefully he has the check valves installed at the torch.
(It sucks when you look back and the whole hose is smoking and melting... )
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Re: Cutting torch problem

Postby slick4591 » Sun Jul 29, 2018 5:25 pm

greybeard wrote:
slick4591 wrote:While you are here... What's happening when your torch pops and the flame goes out?

You thinking a blowback? Hopefully he has the check valves installed at the torch.
(It sucks when you look back and the whole hose is smoking and melting... )


Not really thinking of anything. The boy used it last time and said he had a hard time getting it to stay lit. Said it would make a popping sound and the flame would go out. I had forgotten about it until Ron put up this thread.
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Re: Cutting torch problem

Postby M-5 » Sun Jul 29, 2018 6:06 pm

Tip is stopped up , clean it good.
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Re: Cutting torch problem

Postby slick4591 » Sun Jul 29, 2018 6:24 pm

Thanks! Will do.
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Re: Cutting torch problem

Postby Bright Raven » Sun Jul 29, 2018 6:54 pm

M-5 wrote:Tip is stopped up , clean it good.


Thanks. Will do.
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Re: Cutting torch problem

Postby Bright Raven » Sun Jul 29, 2018 6:56 pm

greybeard wrote:
slick4591 wrote:While you are here... What's happening when your torch pops and the flame goes out?

You thinking a blowback? Hopefully he has the check valves installed at the torch.
(It sucks when you look back and the whole hose is smoking and melting... )


Actually, I don't have check valves at the torch. I know I should.
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Re: Cutting torch problem

Postby Nesikep » Sun Jul 29, 2018 7:07 pm

while it's certainly a good idea to have flashback arrestors, the likelyhood of it flashing back, especially beyond the regulator is slim, the oxygen line carries no fuel, and the acetylene line has no oxygen for a burn
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