Kitchen galley grey tank fills by itself

[icechex]

Without running water through the kitchen sink the grey tank fills on it's own. Anyone have this problem before.

Thanks.

 

[danemayer]

galley grey tank fills by itself

Two questions:

1) How are you determining that the gray tank is filling by itself?
2) Do you have an outside kitchen or a 1/2 bath?

 

[Nuclearcowboy]

Without running water through the kitchen sink the grey tank fills on it's own. Anyone have this problem before.

Thanks.

You could have a problem with your dump valves not seating properly, causing one of the other tanks to sluice over to your kitchen tank.

 

[Bob&Patty]

Never heard of this. Personally I can't see how a gray tank could fill itself. There are no water lines going to them...just sink/shower drains and dump valves.