On 02 Sep 2003 06:32 PM, Joe Maj posted the following:

In fact, a young guy who was
supervising the welding said that if you followed the older guys
advice you would blow up your shop, cracking the valves before
attaching the regulator.

I didn't say it, but I agree, don't crack valves.

Why not crack the valves? I was taught in welding class years ago to
always crack the valve briefly before installing a regulator. The idea
was to blow out any dust that had settled in the outlet so that it
didn't get into the regulator. Have I been on the verge of disaster all
this time?

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Del Rawlins-
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