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Oxy/Acet: Pretty sure it's not supposed to do that...

Metal cutting - oxyfuel cutting, plasma cutting, machining, grinding, and other preparatory work.

Oxy/Acet: Pretty sure it's not supposed to do that...

Postby billybobadoo » Sat Jan 14, 2017 1:48 pm

Good day,

I'm *very* new to welding and cutting. I bought a new medium duty cutting kit yesterday manufactured by Victor. Hooked it all up, tested gas flow and noticed the oxygen regulator stutters when flowing.
I lit up the torch and the flame also stutters. The acetylene seems to flow just fine. I made a video with my phone and posted it on youtube: https://www.youtube.com/watch?v=bf7p2w7Buzc
I removed the hose from the torch and it still does it, just faster due to higher flow.
Am I doing something incorrectly or do you think there's something wrong with the regulator?

Thanks.


-Dave

[youtube]https://www.youtube.com/watch?v=bf7p2w7Buzc[/youtube]
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Re: Oxy/Acet: Pretty sure it's not supposed to do that...

Postby Mike » Sun Jan 15, 2017 8:54 am

Dave, welcome to the forum.
M J Mauer Andover, Ohio

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Re: Oxy/Acet: Pretty sure it's not supposed to do that...

Postby Poland308 » Sun Jan 15, 2017 10:49 am

That's a high pressure regulator. It will do things like that because your trying to run it on the low end of its range. The spring is apparently too stiff to give you good control over pressure in the range you need to be. I would hook it up to the torch, set your pressures and light it up to see if it smooths out while it's in actual use.
I have more questions than answers

Josh
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Re: Oxy/Acet: Pretty sure it's not supposed to do that...

Postby electrode » Sun Jan 15, 2017 1:49 pm

I had that happen to me on my oxygen regulator and tried to turn it up to see if the problem would go away. It sort of helped but kept acting up. I ended up ordering a kit to rebuild the regulator and that fixed it.
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Re: Oxy/Acet: Pretty sure it's not supposed to do that...

Postby Otto Nobedder » Sun Jan 15, 2017 3:23 pm

One other possibility... Is there a flashback arrester at the regulator? Seems to me the new torches all have them, even the Harbor Freight sets. Sometimes these things will stutter and you'll see it on the gauge and in the flame. I believe it has to do with the spring tension. If you remove it to test, and it proves to be the problem, be sure to replace it rather than just toss it and go on without.

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Re: Oxy/Acet: Pretty sure it's not supposed to do that...

Postby electrode » Mon Jan 16, 2017 11:23 am

If it's new you may want to exchange it. If you want to fix it see this video:

https://www.youtube.com/watch?v=POU7Zc8ONOM

p.s. If you decide to work on it remember NO OIL or GREASE at all.
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Re: Oxy/Acet: Pretty sure it's not supposed to do that...

Postby billybobadoo » Sat Jan 21, 2017 7:50 pm

spoke with the manufacture - they said they'll replace it.
New one doesn't do it.
Thanks for all the suggestions.


-Dave
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Re: Oxy/Acet: Pretty sure it's not supposed to do that...

Postby electrode » Tue Jan 24, 2017 11:27 pm

Good deal. They definitely are not supposed to do that and now you are all set. :)
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