That's a Polaris wall fitting.. it lets you do a quick connect/disconnect of your cleaner. There should be a large wall adapter that stays in the wall also. The small round relief port on the side opens and closes to increase/decreases water pressure to the cleaner.
Skippy :batman: used one to make his fountain which we plug into the cleaner return in the pool. You can see it in the link in my siggy line.
Yip
Skippy :batman: used one to make his fountain which we plug into the cleaner return in the pool. You can see it in the link in my siggy line.
Yip
