flash arrestors

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Qiset
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Joined: Mon Feb 17, 2020 11:22 am

flash arrestors

Post by Qiset » Wed Apr 08, 2020 9:02 am

I now see flash arrestors available for oxy-acetylene. I don't remember them back when I bought my set-up.
I keep thinking that positive pressure and concentration of each gas in their respective line should stop
any flame from going back up the lines. I keep comparing them in my mind to the anti-backflow valves
that are on outside faucets. They are useful only in very limited conditions and have been dictated by
industry. Are flash arrestors really needed? I'm going to be setting up a new rig soon and would like to
know before I buy.
“He who has a why to live for can bear almost any how.”
- Friedrich Nietzsche

John Hasler
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Joined: Tue Dec 06, 2016 4:05 pm
Location: Elmwood, Wisconsin

Re: flash arrestors

Post by John Hasler » Wed Apr 08, 2020 9:46 am

This explains it pretty well:

https://www.harrisproductsgroup.com/Exp ... stors.aspx

Of course, he is trying to sell the things so take that into account. I like your anti-siphon valve analogy. These look like yet another "If we can get OSHA to mandate these we'll be in the money!" device.

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Qiset
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Joined: Mon Feb 17, 2020 11:22 am

Re: flash arrestors

Post by Qiset » Thu Apr 09, 2020 2:49 pm

Thank you for the link. It seems to have both side of the story in it.
“He who has a why to live for can bear almost any how.”
- Friedrich Nietzsche

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