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Old 03-01-2020, 01:44 PM   #1
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2019 27' Globetrotter
Hampton , Illinois
Join Date: Aug 2017
Posts: 3
Toilet fill head scratcher....

We've got a 2019 27FB Globetrotter with a Dometic toilet.

Most of the time when I slightly depress the flush valve, the fill water immediately comes out of the gallery holes to spin water into the bowl to fill it. However, if the toilet hasn't been used for a few hours, it takes 4 or 5 seconds for the water to begin the fill. There's the white tube coming up from the flush valve to introduce water into the gallery around the top of the toilet rim. I'm guessing that the 4 or 5 seconds is the time it takes to fill the tube and the gallery.

What's got me stumped is how that tube and/or gallery got emptied since the last flush. There doesn't appear to be any leaks around the toilet, or beneath the rig, but if it were a leak it would have to be inside the camper and above the flush valve, unless somehow that water bleeds back through the valve into the pressurized side.

I do believe that one time, we were in a camp site with extremely high water pressure (I blew up an external filter to prove it), but it seemed like the fill water was always immediately available. We do have the standard built in internal pressure regulator.

It's not a major problem, but for some types of people.... we just can't let go of something once we start to chew on it.

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Old 03-01-2020, 01:52 PM   #2
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2019 27' International
2014 25' International
2006 23' Safari SE
Boulder City , Nevada
Join Date: Aug 2007
Posts: 3,624
BBC... you are scratching wrong part of your body.

It is most likely air in the system and after you flush, which is a couple of ounces of water, gravity takes the water level in the tube down. If you have been at one spot for days, I would believe that it would be fully pressurized.

If you turn the water pump on and off during the day... we do when camping, pressure is reduced and water levels fall.

I would not think you have any water leaks. You would look under the trailer to see if water is dripping when it has been sunny for days. Otherwise... I say it is normal Airstream quirks with water lines. ALL of the lines need to be purged of AIR. You missed one or more.

If your WATER PUMP is on and burps a lot and you ran all of the water line air out of the system... you forgot the outdoor shower. Right near the toilet. Burping water pump... it is something you are doing. Not the trailer's fault.

If I am wrong... add this to the other thousands of ways we learn how to find these... things. Once you know... let us know too.

If you are on City Water... the pressure makes it faster to purge. Using the PUMP... take a deep breath and spend some time 'sniffing around'. It should be simple.

Good luck. Somethings are just to keep us busy.
Human Bean
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