Will hot water tank still work

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edee_em

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If I turn off the cold water supply to the hwt, will I still be able to use the hot water in the tank by say taking a shower? I have some understanding of how the tank works, so my thought is no, it won't work, but I would like to hear some opinions one way or the other.

I ask this question because I want to drain and flush the tank but don't necessarily just want to throw away heated water. Yes, I am that cheap!!:)
Thanks
 
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