Fresh water drain

[oregnelk]

I have a 1979 Airstream and I need to replace the Fresh Water drain tank (male threads) to the tank. The old plug was roughly 1.5 to 2 inches in diameter. Any suggestions on where to find one.

Thank you,

Blake

[HiJoeSilver]

Originally Posted by oregnelk

I have a 1979 Airstream and I need to replace the Fresh Water drain tank (male threads) to the tank. The old plug was roughly 1.5 to 2 inches in diameter. Any suggestions on where to find one.

Thank you,

Blake

Are you talking about the big one that goes in the bottom of the tank and not on the side?
It's probably either 1-1/4 or 1-1/2 mpt. I found replacement for mine at tractor supply on the tank fitting section, pretty sure mine was 1-1/4.

Unfortunately it was shaped like a cup which means it would always hold water. I was worried about water in it freezing and cracking the tank so I drilled a small hole in the middle, put a stainless screw up through the bottom and filled the cup with melted (non toxic) hot glue. I made the large amount of hot glue by melting it in a container in a 400F oven and pouring into the plug.

[oregnelk]

Mine is the black plug with male threads at the bottom of the tank.

[HiJoeSilver]

Originally Posted by oregnelk

Mine is the black plug with male threads at the bottom of the tank.

Mine was a white(originally) plastic plug. Trick is simply finding one that fits the threads and is pretty flush on bottom so it can fit in the pan. The replacement I found was nylon with a big flat hex head.

[oregnelk]

Where did you find the plug. Or, any suggestions.

Thank you,

Blake

[HiJoeSilver]

Originally Posted by oregnelk

Where did you find the plug. Or, any suggestions.

Thank you,

Blake

I found something that worked at tractor supply. Not sure if you have that where you are, a different branch supply might have them as well. It was a nylon hex plug meant for farmers to use on their big ag tanks.
I'll get a picture today. I might have an extra in one of my bins.

Joe

[oregnelk]

Thanks Joe.

The one I lost was black about 2 inches in diameter and had a socket for a large hex head "allen wrench" tool.

Blake