Well it came off anyway. Coming off the top of the multi port valve.
There is a gray threaded piece into the multport and a fitting on the other side which the
90 was connected. Well it came clean off at the fitting end. Not sure how it was fastened but
the joints were both very clean. I'm thinking this would have been cemented but
I've never seen cemented pieces come apart never mind so clean. So my question is
should this be primed then cemented or is there another compound to join these two pieces.
It was quite the water feature for a minute..