double tanks,black and grey

Yes it is with a bath and 1/2 setup. You likely have 4 dump valves as well but only 2 outlet ports. You can make the dump routine a bit easier by adding a "Y" connection in your hoses so only 1 line has to run to the dump station.

Yes.

I have 4 tanks that all connect to one sewer hose connection. I have 4 pull handles.

For large RVs isn't not uncommon. The space between the floor and the frame is too short to run the pipe from the toilet/shower to a single tank and get a decent slope so it flows well.

Toilets in particular typically go straight down to the tank (or close to straight). This is to make sure the solids don't get hung up in the pipes.

There are many RVs with a bath & a 1/2 that only have two waste tanks and pump the waste from the second commode to the black tank. Read a lot about pump failures. You have the best set up.

Richard

Yes, it is normal, but not common. The FLOORPLAN of the RV determines why they install extra tanks. Doug

Bill.Satellite wrote:
Yes it is with a bath and 1/2 setup. You likely have 4 dump valves as well but only 2 outlet ports. You can make the dump routine a bit easier by adding a "Y" connection in your hoses so only 1 line has to run to the dump station.

I had a bath and 1/2 on my 2004 Georgetown with 2-black/2-grey, 4-handles and 2-outlets. Also 2-black tank flush connections. I actually found it was simpler and more efficient to use a single outlet connection at a time as invariably the distance from the dump connection to one of my outlets would require more than a single length of sewer hose. I didn't feel like carrying 3-lengths of sewer hose. And if you are only staying at locations for 3 to 4 nights per, there's no labor savings with the Y set-up. For longer stays, or snowbirding down South, that's different.