Hot water tank drain plug

[Crabman]

Originally Posted by mcfarmall

Crabman speaks the truth. The last place I worked made aluminum air con tubing and brass heater pipe for Denso. We couldn't run both products in the same building due to cross contamination risks. One small brass shaving embedded into aluminum will eat a hole all the way through eventually.

Yeah I made the mistake of attaching a piece of solid brass guard to an aluminum box that housed an electric crab pot puller on my boat. In less then one season the brass had eaten deep into the side of the aluminum box. I removed the brass and put steel there instead....

[RoyBraddy]

I drain mine and leave it in... There should plenty of room inside the HW tank for expansion from any small amount amount of left over water in it.

I am planning on installing a 120VAC low wattage Electric heater core in this spot pretty soon when I start playing with my Hydronic Heating System changes so this may change my winterizing methods. My hot water heater is presently propane gas only...

Roy Ken