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DogTrainer's avatar
DogTrainer
Explorer
Jul 21, 2015

Draining Freshwater tank

I need to update my signature but my brand new Keystone ultra lite 33 foot 5ver is getting ready for its maiden voyage.

Question my TTrailer has a large drain valve and my new Keystone has a valve and very small drain , its about the size of a pencil coming out and its been a hour and i'm only down I quarter.

am I missing something or why would they make it so small. inch pipe to a valve and then reduced to "pee stream".
  • That's just crazy. Ours is a 1-1/2" ABS pipe with a gate valve like the grey tank. Empties out in a few short minutes. rockin'
  • Drain hose for my Silverback is the same as the OP's. Don't have a clue as to why, but it doesn't bother me. Yea it takes awhile to drain, but outside of sanitizing it in the spring, the tank only gets used 1x a year.
  • If your gray tank is empty just turn on your pump and all the faucets that should empty it in short order.
  • DogTrainer wrote:
    I need to update my signature but my brand new Keystone ultra lite 33 foot 5ver is getting ready for its maiden voyage.

    Question my TTrailer has a large drain valve and my new Keystone has a valve and very small drain , its about the size of a pencil coming out and its been a hour and i'm only down I quarter.

    am I missing something or why would they make it so small. inch pipe to a valve and then reduced to "pee stream".


    You sure that's not the low-point drain, used for winterizing? A valve that size really can't be used for much more than that. You sure there's not a larger valve, say about 1.5-2"?

    Lyle
  • My fresh water tank drain is 1/2" PEX with valve.....then reducer.
    So I got rid of reducer.


    Remove the reduced size pipe or change out to larger valve.

    It's your RV......Modify as needed to suit your needs
  • They must have a reason, but I don't know what it is. My drain hose, hanging out the bottom, looks to be about 5/8 hose, but has a reducer just inside the end, with cap removed, to make a pencil size stream.

    I have a 60 gal fresh, and It seems to take at least 3 hours plus, to drain it.

    Jerry
  • Not sure why such a small drain size but opening a faucet or fresh water gravity fill if you have one may speed up the flow.
  • Not sure "why" but I know my rig has similar small drain valve. Fortunately I only drain the FW tank when I winterize and after I sanitize in the spring.