black and gray mixed up

[HD4Mark]

Originally Posted by ken90004

Sounds odd. I believe my shower in draining into the black. I noticed the larger pipe and thought that the solids would have to use it.

That means i either need to leave the black open or expect it to be full after three or four showers.

Ken, Is your shower on the same side of your coach as the toilet? Our bathroom sink drains into the black tank but I assume that is only because the sink and toilet are both situated over the black tank. Everything that drains into the gray is on the other side.

Honestly I have never heard of a shower draining into the black tank.

[ken90004]

You can sit on the toliet and put your feet in the tub. Drains are less than a foot apart

[mel s]

Originally Posted by ImagineIF

I can't imagine any builder putting anything in the black tank except the toilet.

ImagineIF
As built by SMC:
My bathroom sink drains into the black tank.
The tub/shower/tub and the kitchen sink drain into the gray tank.
My Splendide does not drain into either tank, (it drains directly out of the 3" sewer hose connection).
Mel
'96 Safari Sahara

[Tony Lee]

Assuming you have checked by leaving the valve open and running the shower then they obviously got lazy and took the easy way out. Bad practice since kitchen and basin don't really amount to much, but that depends on relative size of tanks. Doubly bad practice because unlike the basins and sinks, the shower is lower than the toilet and obviously potential for sewage to backflow into the shower base

Nothing to be done about it and you need to dump every three days (which you would have to do anyway if the shower ran into the grey tank)

Even if the RV is brand new, there may not be any enforceable code that would apply in this case

Guess you know not to leave your black valve open all the time when on hookups to avoid a build up of solids. Let it fill to more than half before dumping and then close the valve

[HD4Mark]

Originally Posted by ken90004

You can sit on the toliet and put your feet in the tub. Drains are less than a foot apart

Sure sounds like the shower goes in the black tank. I also would test it by dumping both tanks and make sure they are empty then close both, run the shower for a while then see which one has water in it. If it actually works like that it would be a major inconvenience for us. We can go over a week on the black but if not conservative on the gray get only three days. Some parks w/o site sewer connections will either allow or turn a blind eye to draining the gray on the ground.