Having read and watched quite a few things about winterization, I think I'm ready to tackle it. There is one issue however that I don't understand having to do with the flow of water. I have a water heater that looks like this:
(pulled from this post:
http://ourcampingadventures.com/2016...stone-hideout/)
I see the one valve down at the bottom, which I understand will stop the liquid from entering the "cold" side of the heater. But what I don't understand is: what will stop the water from hitting the top "T" and going "left" and filling the water heater? Is there an internal check-valve that prevents water from going in the hot side? I would have expected a valve in place of the top "T."
Thanks!
Just want to make sure I'm not going to accidentally pump six gallons of antifreeze into my water heater.