I have a corroded fitting on my holding tank vent that I need to identify and replace. Any suggestions please?
Holding tank vent fitting
- Thread starter keithonElan
- Start date
I have a corroded fitting on my holding tank vent that I need to identify and replace. Any suggestions
Previous pic was a crop of this one. I haven’t been able to find this fitting. It would be useful if someone recognizes it. Boat is a 2007 Hunter 33.
Any idea what it does ? Is there another vent on the top of the tank or is this intended to be the one and only vent ? The last thing in the world you want is something venting your holding tank into the interior of your boat.
That's got to be an after market install by a certified nut job.
That's got to be an after market install by a certified nut job.
The pic shows the top of the holding tank and the fitting connected to it. Not shown is a one inch flexible hose that used to lead to the vent on the side of the boat. I’ve had the boat from new when i bought it in 2007.
It looks like there is a threaded boss glued/welded to the tank, with a 90* adaptor screwed into that, and someone screwed a brass hose barb adapter into that. The brass is unsuitable and corroded.
Is that 90* piece plastic or metal? If plastic, then unscrew or pick the remaining brass piece out of it and replace the brass piece with a plastic hose barb adapter.
If the 90* piece is metal, unscrew it from the boss and replace it with plastic.
Mark
Is that 90* piece plastic or metal? If plastic, then unscrew or pick the remaining brass piece out of it and replace the brass piece with a plastic hose barb adapter.
If the 90* piece is metal, unscrew it from the boss and replace it with plastic.
Mark
Thanks Mark. The 90 deg piece is metal and I will replace with plastic. In planning to unscrew what looks like a nylon nut attaching the fitting to the flexible tank, I want to avoid possibly damaging the tank.
It is likely that nylon nut is part of the tank boss itself, and forms the threaded part of the boss fitting. That would be my guess. So you don't want to try to unscrew it. I'd try to unscrew the metal elbow thing out of the nut.
I think first I would try to remove the brass corroded piece from the elbow to get a better idea of what the elbow is made from. The pictures aren't great, but that elbow looks weird being white and oddly chunky.
Mark
Yes, that sounds like a good approach. The brass elbow is inside the white cylinder that should give good leverage. It’s not obvious what purpose the white cylinder serves.
Thanks.
Thanks.