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Are check-valves necessary between torch and hose?
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So I already have my flashback arrestors between hose and regulators so I know my tanks are safe but what about check valves to protect the hose?

I have a Lynx and so it has smaller 3/16th cables coming from the torch to barbed B-fittings. I'd think these would need to be replaced with real B fittings and the check valves added here, right?

or are they not really needed?

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11 years ago