2015 Voltage 3970 questions

[Rhoadzie]

I’m trying to figure out the grey and black tan situatuion.

I see two valves under the fifth wheel. One forward nearly under bathroom. I’m assuming that is the black water tank. There is another black pipe nearly under Kitchen. I’m assuming that is for the grey water.

But, there is another white pvc pipe hanging between the two black ovc pipes. It is much smaller but still pvc. What is that for?

[RDJ]

Sounds to me that is your fresh water dump valve, I have 2 on mine

[scottxpc]

Originally Posted by RDJ

Sounds to me that is your fresh water dump valve, I have 2 on mine

Yes most likely your fresh water dump should also have a valve with a white handle. Blackwater tank will have a valve with a black handle and Grey tanks a grey handle

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[Alprath]

Your grey and blank tanks share the black 4" drain pipe. Drain black first, then grey water second. Rear black is for your kitchen grey water. Smaller white is your drain for fresh water on board tank.

[Rhoadzie]

Thanks. That seems to be the consensus.

[Pirate]

On my 3800 there is a dump valve and piping just about under the "wet cabinet".

There is a 2" white valve about four feet to the rear. That is the fresh water tank train.

Another 6 or so feet behind that is another 4" dump valve and piping.

The forward 4" dump valve is for the main bath black tank and the main bath grey tank and the kitchen and garage bath grey tank.

The rear 4" dump valve is just for the garage bathroom black tank.

Pirate