Feuer > wrote in :

>
>
> Dimitri wrote:
>
>> Water under normal pressure conditions will not exceed 212 degrees (the
>> boiling point). The water prevents the contents from getting too hot and
>> exploding the can.
>
> But the water _covers_ the can so that there is higher pressure on the
> outside than the inside.
>
> David
>

The difference 6 inches of standing water makes to the pressure is minute.