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Re: tank pressure reading

I open the valve a little past cracked, as the gauges swing immediately. 
Well it seems that my old regulator, reading 2,000, had a bad gauge. 
My guess is the tank wasn't filled last time as it registered 400. 
I will retest the valve stem and the metering valve. 
Thanks all.

>It sounds to me like the tank valve is leaking around the stem packing.
>Are you opening the valve all the way, or just cracking it open?  I know
>that oxygen valves have a seat at the top to seal the valve stem when it
>is all the way open to prevent this very problem.