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Join Date: Feb 2001
Location: Cumberland County 5A
Re: Draining a Hot water tank
If you've opened all the hot water faucets to allow venting and it still won't flow, the drain valve is probably clogged with goop from hard water? That stuff builds up and eventually settles to the bottom, clogging the drain valve.
Try turning the fill valve (cold) ON while the drain hose is attached and drain valve open. If the goop isn't too thick, that'll often flush the drain valve.
If that doesn't work, a double female end washing machine hose can be used to back flush it out a bit: Connect wash. mach. hose to drain valve, other end to a garden hose.
With cold water (fill) valve to water heater shut off and hot water faucets open, turn the hose on a few times to clear (back flush) drain valve, disconnect from garden hose, then see if it'll drain itself afterwards.
Some folks' learnin' curves just look like circles...3A Camp/also hunt 4B