I have a vinyl pool with fiberglass stairs. There is a fitting on the stairs that needs a gasket replaced as it's rotting, but I can't figure out what the fitting is. This fitting is hooked up to be used to add water to the pool, but I also have no idea if that's what its intended purpose is. I'm posting some pictures and some measurements in the hopes that someone here will know what I should be looking for as far as a gasket and if I should be able to remove the fitting? I'm hoping it will unscrew, but I haven't attempted that yet since I don't have a replacement gasket. Ideally I would replace the fitting as well since it's looking pretty janky. Here are the pics:
Measurements for the fitting are:
Measurements for the fitting are:
- Opening: 7/8th
- Flange diameter: 1 5/8th