Originally Posted by TheWolfPaq82
I was fortunate with our old Jayco with the Atwood. The first trip out I found a brass or copper plug laying on the ground at the campsite. I replaced the plastic plug which already had the edges tore up and kept the plastic one as a spare in my tool box.
The original plug is plastic for a good reason. By using a brass plug, you are defeating one of the best things about having an Atwood water heater, which is all aluminum. The brass plug, being of dissimilar metal to the Atwood water heater tank, will cause galvanic corrosion/bimetallic corrosion which will shorten the life of the tank and, quite possibly, “weld” itself to the threads of the water heater and the plug, making it impossible to drain the tank.
You might say you have had no problems using the brass plug, but you really can’t know how much damage this is doing until it is too late.
Just something for you to think about — the presence of plastic isn’t always a sign of cutting corners and saving costs. Sometimes it is a sign of a manufacturer actually knowing what they are doing and saving you money.