Hot water tank drain plug
Hi everyone, hope that all is well with each of you out there. Due to some emergency brain surgery a month ago, our camping season sadly has come to an abrupt end. We are in the process of cleaning ...
Forum Discussion
BluegrassBill wrote:
FYI, After draining there is still a couple of inches of water in the bottom of the tank. I use a small siphon hose to get as much out as I can. X2 on socket, Extension and ratchet.
Granted, there will be a small amount of water below the lip of the plug opening, but.. It isn't enough water there to warrant trying to figure out how to remove that water.
In a nutshell, the water level is sufficiently low enough that even if it freezes, the expansion of the ice is not confined and no harm will come of the tank.
It is all about giving the ice enough space to expand without causing damage.
When the ice is restricted and has no place to expand that is when damage happens.
Think of what happens when you freeze a water bottle. If you do not open the water bottle and remove a small amount of water before freezing the ice will expand enough to break through the weakest point of the bottle.
Now, if you open the bottle, remove as little as a 1/2" of water you can safely put the bottle in the freezer and freeze the water solid with no harm to the bottle.
