Quote:
Originally Posted by Hangs Well
Wrong! Flashback arrestors will stop a backflow of gasses and they will also stop the much more serious flashback ( flame actually travelling back with the gasses). The check valves will only stop a backflow of gasses. If choosing between them, I'd go with flashback arrestors at the torch.
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flashback arrestors are attached at the regulator in case of a hose fire, if they are at the torch and your hose catches fire your tank can still explode.
use an flashback arrestors for both propane and oxy when using tanks.