CO2 bottle/valve issue

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LostHopper

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Sep 3, 2014
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After filling a keg and connecting CO2 I put both keg and bottle (5#) in beer fridge. Sometimes I burst carb or set and forget. Drink beer. No problems.

When I remove keg and CO2 bottle from fridge if I turn off gas at the tank and turn it back on to run pbw thru serving line the CO2 spews out from under the valve knob on the bottle.
Once the bottle warms up to room temperature, then no more leak.
This has happened with different CO2 bottles, even brand new ones.
What is going on? Is this just some quirk with the construction of the valve?

I've taken two bottles to the local compressed gas supply company who provides gasses and equipment for everything from bars to hospitals.
They check the valve and bottle and tell me it's all good.
 
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