Third Sewer Valve???

[Wisconsin Retiree]

I have a 2019 3121RL and noticed what appears to be another sewer valve located just forward of the wheels tucked up by the frame. I have the black and gray T handles in the wet bay but had not been aware of this other T handle pull. I assume it is a third dump valve or am I incorrect?

[DaveGoodman]

Yes, it is a third tank drain. Probably from your galley.

[R.S.O'Donnell]

Our 2020 3121 has the same thing. Kitchen sink tank.

Like you I "discovered it" after we had the rig for a few days.

[rohrmann]

On our rig, the galley drain pull is just to the rear of the wheels, and is much easier to get to when the rear slide is extended. There is actually a little label on the lower edge of the skirt of that slide that indicates the location of the pull that says ‘grey tank’.

[Wisconsin Retiree]

So am I understanding the kitchen sink has its own gray tank ? If so how big it really doesn't mention anything about a galley tank?

[AZ Traveler]

Chuck,

Both of your grey tanks are 40 gal.

[R.S.O'Donnell]

Specs says 88 gallons of gray total. I have always assumed two 44's. Though I might be wrong.

[Tom N OH]

Originally Posted by R.S.O'Donnell

Specs says 88 gallons of gray total. I have always assumed two 44's. Though I might be wrong.

Correct.

[Wisconsin Retiree]

Ok, well now I am understanding. Thank u ALL

[mhs4771]

Usually the post is that their Kitchen Sink isn't draining and yet they've pulled the Gray drain in the wet bay. That's when someone tells them to look for the second Gray pull.
Question comes up all the time.