Fresh water drain

[Len791]

Can anyone here help me locate my fresh water drain in my 2019 Keystone Avalanche 379bh. I’m looking underneath this 5th wheel and see two different blue line drains but do not know which one is the fresh tank drain.

[fonzie]

Open both and let water run out, then put water into fresh water tank and then only one will flow indicating fresh water drain.

[bikendan]

Originally Posted by Len791

Can anyone here help me locate my fresh water drain in my 2019 Keystone Avalanche 379bh. I’m looking underneath this 5th wheel and see two different blue line drains but do not know which one is the fresh tank drain.

Len, since your Keystone is not a FR product, I doubt if anyone here can tell the exact location of the FW drain.
That kind of information is specific to that brand/model.
Pics would probably help more.

[CHICKDOE]

do both of the blue drains have caps on them? is one of the blue drains next to a red drain? if so, those will be your low point drains. the other will be the fresh water tank drain. if one of them does not have a cap that will be your fresh water overflow.

[Len791]

Fonzie I opened both drains under the belly and water came out of both then prior to closing them I started filling the tank as the new water filling the tank came out of both drains, then I closed them and filled my tank about 1/3 according to the wall panel reading.
I do not believe there's two separate fresh water tanks? One of the two drains is under the kitchen island and the second drain is more to the center under belly.
I accomplished what I wanted to do which was to drain my tanks and just fill the tank 1/3. I just wish I could understand why there's two drain plugs.
In my Class A I could see the tanks but in these 5th wheels everything underneath is covered up.