I have a water heater that is leaking slowly from the drainage valve. I've been told that it is easy to replace (after turning off and draining the tank). Just remove the old plastic valve, and replace it with brass valve that looks like the valve for the front yard hose.
Is this true? And will teflon taple hold up to seal the threads for hot water?
Turn OFF the power or gas and water supply to the heater.
Drain the tank and remove the leaking drain valve counter-clockwise.
Wrap 2-3 flat wraps of teflon tape around the threads of the new valve clockwise only as the threaded end faces you, and tighten it in good.