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Old 01-15-2021, 04:22 PM   #1
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2018 28' Flying Cloud
Clayton , Georgia
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Water tank overflowing

Been on the road nearly a month now and have had our share of minor mishaps.


The latest is the fresh water tank overflowing when connected to city water.



I know it's the water pump check valve allowing water to back feed into the tank, but in the past running the pump for a second would clear the sediment, or whatever, holding the valve open and all would be well again. Well, so far not this time.


I don't want to have to replace the pump, or even take it out from under the stove and take it apart. Any ideas for unjamming the check valve, or is there an inline one I can install as a work-around?



Thanks!
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Old 01-15-2021, 04:39 PM   #2
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Run the pump for a longer time!
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Old 01-15-2021, 06:16 PM   #3
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1988 32' Excella
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You could try having the faucet open till no pressure in lines then cycle the pump a few times. Otherwise add a separate check valve or even a ball valve.
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Old 01-16-2021, 05:40 AM   #4
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Quote:
Originally Posted by Wazbro View Post
You could try having the faucet open till no pressure in lines then cycle the pump a few times. Otherwise add a separate check valve or even a ball valve.

How about one of these: https://www.amazon.com/gp/product/B0...1-dc3240e894a8 ?
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Old 01-16-2021, 04:23 PM   #5
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Looks like it should work.
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Old 01-16-2021, 05:06 PM   #6
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Originally Posted by Wazbro View Post
Looks like it should work.

I'll go ahead and place an order. Moved to a new campsite in another state park this afternoon and didn't bother to hook up our water hose to the spigot. May as well use up all that nice fresh water in the tank and not have to waste any by it overflowing....
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Old 01-16-2021, 05:20 PM   #7
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1986 31' Sovereign
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I am a bit paranoid but when I don’t have full hookups with the gray valve open, I never use city water. If you use your fresh water tank and the pump, you will hear it come on if some fitting lets loose in the middle of the night or your beloved spouse doesn’t quite shut off the faucet in the bathroom. No chance of filling the gray tank to overflowing or flooding the trailer from a leaky junction...

Sure, you have to fill your tank every couple of days but a minor inconvenience.
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Old 01-16-2021, 05:23 PM   #8
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Quote:
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You could try having the faucet open till no pressure in lines then cycle the pump a few times. Otherwise add a separate check valve or even a ball valve.
Quite a few times if necessary IMO.

Also, using an inline RV water filter in your potable water hose will help prevent grit in the pump's check valve in the future -- both when filling the tank, and when hooking up to city water.

And yes, using the tank is an excellent short-term solution.

Happy trails . . . and . . .
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