Water heater drain plug dripping even with a new plug

[james.mileur]

Drain plug under water and pressurized regardless of an air cushion in the top of the water heater or not. Don't understand the connection.
No pun intended.

[marki]

I purchased two drain plugs from the local hardware store at $1.76 each.
I've replaced the WH drain plug but it still drips. I wrapped the plug w/ teflon tape in hopes to prevent the drip but to no avail.
So, I bought two plugs from Amazon for $10 which have the same exact model no. as recommended from AS thinking they were better. When I received them they were exactly like the drain plugs I purchased from the hardware store for $1.76 each. Someone's making a tidy profit from these... lol. Don't buy them from AMAZON.
I did notice that the drip is more prominent when the water is connected to the campsite water and under pressure.
Any suggestions?

[tbrowne]

You will probably have better luck using pipe dope. It generally gives a better seal than teflon tape especially with problem joints.

[ROBERT CROSS]

Originally Posted by okstreamer

Another plumber here, and I agree with previous post, get rid of the plastic plug, it has different thermal growth characteristics than the surrounding metal. My plastic plug started leaking and I just replaced with a brass plug and small amount of pipe dope . No more leaks.

^
YEP... I used a valve that stays put.

Bob
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