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SJ-Chris's avatar
SJ-Chris
Explorer II
May 05, 2023

Fresh water tank taking too long to fill...any suggestions?

I have a 2013 Coachman 210qb Leprechaun 23' Class C. I believe it has a 50 gallon fresh water tank.

The issue I am having is that it takes a VERY long time to fill up the fresh water tank. I have other RVs with similar sized fresh water tanks and they take a "normal" amount of time (5-10 minutes) to fill up the fresh water tank. But for some reason on this 23' RV it takes a very long time. 25-30 minutes or more. It is as if there is something restricting the flow into the tank. Or, could the tank be a closed system and perhaps the air in the tank has no way to escape during filling and therefore it creates a sort of back pressure to limit the amount of water that can enter? I can hear the water flowing. When the fresh water tank is nearly empty I can hear the water flowing in (splashing) when I turn on the hose. But it seems like once the fresh water tank gets to be 1/2 to 2/3rds of the way full the water flow into the fresh water tank is reduced to a trickle.

This RV uses the type of water fill connection where the water hose (when filling the fresh water tank) gets screwed into the connector on the side of the RV. (This is different from some of my other RVs that simply have a ~1.5" opening tube (with a cap) where you slide the hose into the pipe to fill it up). The connection point for the hose does have a screen, but when I have looked at it before it didn't look like it was blocked/clogged. I do have a simple water filter that connects to the end of the hose to filter the water going into the RV fresh water tank, and I have verified that the water easily flows through that filter (it isn't causing the flow restriction).

I haven't taken a close look yet or started taking things apart. Just thought I'd check here to see if anyone had any suggestions.

Thanks!
Chris
  • dedmiston wrote:
    joebedford wrote:
    Screw in connection is usually the black tank rinse.


    Not necessarily. I've got three screw-in connections:

    1. Black flush
    2. City water connection
    3. Fresh tank fill

    Mine fills slowly too, but my blocker is in the vent and not in the fill. If I fill mine too quickly, it will puke out the vent line. My two problems are a narrow vent and a small line to equalize between my two 60 gallon fresh tanks.

    My half-baked solution has been to put a valve on the end of my garden hose and then a meter after that and before the inlet on the coach. I zero out the meter, guestimate at how much water I need for the trip, set the fill rate low, set a timer on my watch, and then let it run while I do other things while I'm packing. It's very imperfect and I hate it, but it works for me.


    My RV has the same 3 screw in connections.

    When filling the tank, at my home BEFORE going on a trip, it isn't a big deal that it fills slowly. Annoying, but manageable. My issue is when I'm out camping and I'm at a dump station that also has a hose for filling the fresh water tank. In that situation, it takes 30 minutes or longer which is unfair to anyone who might be behind me (...so I end up just filling as much as I can in a "reasonable" amount of time so as to not annoy people behind me).

    Hopefully I can find a clogged vent/etc and fix the problem. Although I have a hard time imaging the vent getting clogged as the only thing that enters the fresh water tank is...water.

    -Chris
  • Might be as simple as debris in the screen filter where you hook the freshwater hose. Been there and have the tee shirt ;)
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    joebedford wrote:
    Screw in connection is usually the black tank rinse.


    Never heard of a City Water connection did you.... Many RV's both motor homes and trailers have a city water connection for fresh potable water AND a connection to rinse the black tank

    And some have a valve that allows you to fill the fresh Tank from the city water connection. More common on motor homes it's found on some trailers.

    But if the inlet is also a pressure regulator. or if you use one in line. Read my prior reply.

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