Grey/Galley water in dump line

[Volvodriver]

Have about a gallon of grey/galley water in dump tube when I take the cap off to connect sewer pipe when setting up at cg. Have grey-galley-black tanks. Possible small leak in slide valve of the grey-galley tanks???
Any thoughts on this???

[KyDan]

You have a dump valve that is not holding.
Which one is anybody's guess.
You're in warranty. It should not do this.
Take it back to your dealer at your convenience and get them to find
and replace the defective/leaky dump valve.

[Ida Ratherbe Camping]

Mine had a plastic shaving in it from the factory. Wouldnt let the galley valve close all the way. It was easy to tell which one on mine, just a little bit of the shaft showing on the slide valve. Fixed mine in the CG in about 20 mins.