Forum Discussion

jlmurren's avatar
jlmurren
Explorer
Apr 20, 2014

Quick Fill Fresh Water Tank

I am a first time user of a class a motorhome. I need help with a couple things in regards to my gray/black and fresh water tank. First, I have a quick fill valve where I hook my water hose up to fill my fresh water. I am not sure what to do with this. I have just left the handle where it is and it slowly puts water into my holding tank. When I turn it the other direction I can actually hear water going into a tank. Can someone explain this to me please?
Also, how do you know when the tank is full? How do you empty it if you don't want to have water in it when you are moving?

19 Replies

  • jlmurren wrote:
    I agree but the valve doesn't say on or off it just has an arrow showing the you can turn it one way or the other.

    I can't find where or how to post a picture of it.
    You have to use a photo hosting site like photobucket. Here is a whole discussion area on how to do it: RV.Net Tutorials and Picture related FAQ's
  • You might have a tank flushing setup if turning the handle one way sends water to your tanks (usually black). However, there should be someway for you to remain hooked up to fresh water with one setting that will send water to the and another that would keep the incoming city water as your water source. Is there more than one valve in the general area?
  • I agree but the valve doesn't say on or off it just has an arrow showing the you can turn it one way or the other.

    I can't find where or how to post a picture of it.
  • sounds to me like your "off" position makes the water go into the tank, and the other position is for using city water.
    bumpy
  • I am only finding one place to attach the hose to and it is at this quick fill control. I am not finding any other place to put a hose in or attach a hose. When the hose is turned on I have water pressure. But when I turn it off I have to turn the pump on. My MH gauge is showing low for fresh water tank. How do I know when it is full? Also, my gauge is showing 3/4 full on my gray/black tanks. I have only maybe flushed the toilet 6-10 times. How accurate are the MH gauges?

    Can anyone tell me how to attach a picture to my post?

    Also, I was worried about having the tank full because I pull a 16' steel stock trailer with a horse and tack in it. Should I be worried?
  • Since I usually fill my coach alone, I just watch the manual fill location behind the small upper door. When it starts running out there, the tank is full.
    Some tanks do have an overflow pipe(NOT your tank drain) that will allow a certain amount of water to run out AFTER you stop filling the water tank. Since I have the upper manual fill, which also acts as a vent for the tank, I just plugged my over flow valve. This has caused no problems after more than four years of travel with the overflow plugged. I would only do this if you have the manual fill location above the tank, behind the small exterior door.
  • Yes, you should complete your profile with the make, model, engine, etc of your MH as they're all different, but maybe this will help.

    You'll probably have two places to use the hose. One will be a screw on hose connector that will have a valve which will divert the water into either the MH water system while not putting any water into the tank, or the valve will divert it into the tank. The other place you can put the hose is a place where you just stick the hose into a hole behind a little flapper door that usuaully has a lock on it. The hole will just fill your water tank.

    Go inside the MH, make sure the water pump is turned off and open a faucet to remove any water pressure in the system. Then with the hose hooked up to the threaded connection, go inside, make sure the water pump is turned off, and open a sink faucet to see if you have good water pressure. If you do, you're using city water and not filling the tank.

    If you have no water pressure, then the hose is probably filling the water tank. Watch your fresh water tank gauge. While MH gauges are not accurate, after 10 - 15 minutes, if the water is going into the tank the gauge will show some an increase. If you're in a quiet area you should also hear water going into the tank. You can turn on the water pump and you should get water after the pump builds up pressure. You may get a lot of air or bubbles until they get out of the system.

    As for your fresh water drain, the mfgs hide then in all sorts of places. You should sanitize your fresh water tank once a year. Put either sanitize or bleach in the search block for directions. Don't worry about traveling with the tank full of water. The DP won't notice the weight and you never know when you'll need the water while traveling - think of flushing the toilet......

    Bill
  • Oh sorry. It is a class a 1997 Rexhall Aerbus. The previous owner has added a lot of updates to it. I have the owners manual but it doesn't give specifics.
  • We really need to know what type of coach you have. They are all different.