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Originally Posted by dashdot
I haven't been able to find a flashback arrestor for use with a liquid like gasoline. Any suggestions on where to get one?
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IIRC, a flashback arrestor is composed of 2 concentric tubes, one smaller in diameter than the other. The inner tube is perforated, the outer tube is not and at least 1/4" of free air space separates them. The inner perforated tube is usually a little shorter in length than the outer tube. Sometimes there are 2 concentric perforated tubes surrounded by a non-perforated one. The flammable material is ignited just beyond the solid outer tube. I doubt you can buy it ready made but it is an easy part to fabricate to be sure.
soundmotor