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poppa

Dallas, TX

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Posted: 02/09/20 04:48pm Link  |  Quote  |  Print  |  Notify Moderator

when im hooked up to city water will the fresh water tank fill up? I noticed my fresh water gauge came to full when I did this? new to this situation? thanks

Lwiddis

Morro Bay, CA

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Posted: 02/09/20 04:54pm Link  |  Quote  |  Print  |  Notify Moderator

When you are hooked to city water all those little plastic water lines are pressurized to whatever the park is supplying you or what your regulator allows. Safer to fill the tank and use the pump.


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Turtle n Peeps

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Posted: 02/09/20 05:05pm Link  |  Quote  |  Print  |  Notify Moderator

Not in any trailer I have owned or even heard of.


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kellem

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Posted: 02/09/20 05:05pm Link  |  Quote  |  Print  |  Notify Moderator

No it should not be able to reverse through the water pump and fill your fresh water tank.
Have not experienced that in 4 trailers.

ajriding

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Posted: 02/09/20 05:31pm Link  |  Quote  |  Print  |  Notify Moderator

The city water should connect to your water lines after the 12v DC pump, which has a one-way valve so water can only flow out of the tank/ out of the pump.

You would need to add a ball valve off a Tee after the pump and route it back to the water tank, or the water line before the pump to flow water from city to tank.
You would need to do this manually and monitor it to turn it off when full as it would run constantly into the tank and out of the air vent or fill spout.

Lynnmor

Red Lion

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Posted: 02/09/20 05:31pm Link  |  Quote  |  Print  |  Notify Moderator

Some RVs have a valve to fill the tank, if it is open or leaks, the tank will fill. If the check valve in the water pump leaks, that too will fill the tank. Common problems.





ScottG

Bothell Wa.

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Posted: 02/09/20 08:59pm Link  |  Quote  |  Print  |  Notify Moderator

Never seen that in a travel trailer but it's fairly common in MH's.


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cavie

Port Charlotte Fl/ Hindsdale MA

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Posted: 02/10/20 02:32am Link  |  Quote  |  Print  |  Notify Moderator

Very common in all Types of Rv's. Check valve leaking. Take pump apart and clean. Rebuilt kits available on Amazon. Install a check valve between the pump and the FW tank. 3 fixes is all I got.


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joelc

Cedar Point, NC

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Posted: 02/10/20 07:09am Link  |  Quote  |  Print  |  Notify Moderator

Your valve in the pump is not working and is allowing city water to flow into your tank instead of stopping at the pump. I had the same problem. I installed a water shut off valve after the pump to stop the back flow. If you are going to use water in the tank turn it on, if not shut the valve to prevent the back flow. This fix being short of risking water flooding the RV and bursting your tank from pressure.

ajriding

st clair

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Posted: 02/10/20 02:46pm Link  |  Quote  |  Print  |  Notify Moderator

Also, maybe the city water pressure is too high and causing the valves to leak?

A pressure regulator is a safe thing to have for these plastic water systems in RVs to protect against high city pressure.

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