Water Tank fill valve from City water line! - Fiberglass RV


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Old 06-17-2008, 06:51 PM   #1
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Name: Michael
Trailer: 1993 Bigfoot 17 ftCB / 2011 Toyota Sienna
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How, where can I install hoses and valve to allow me to turn a valve and fill my internal water tank from the connected City water hose.
I usually connect the water system while parked at my home and want to just open a valve to fill up the internal tank.
I have a Bigfoot 17CB which has a standard water system, I believe. Rather than pulling the hose connector and then standing and filling the tank for 10 min, it would be nice to open a valve and wait till the overflow starts to gurgle. There must be a check valve that I can bypass!
Neat.
Ideas??
Thanks.
Mike.....>
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Old 06-17-2008, 07:38 PM   #2
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There is a very good chance the tank could become over pressurized. The vent hole is small, and city water running 80 or so psi... well things could get mighty wet inside your egg. It only takes one "oops, I forgot to turn off the connector with the fill cap still on." But hey, it is only one bug that needs to be worked out .
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Old 06-17-2008, 07:52 PM   #3
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Quote:
There must be a check valve that I can bypass!

Ideas??
I think the check valve you allude to would be internal to the 12 volt water pump. So, you'd have to plumb a bypass line around the pump. One problem I see would be the need to put the bypass valves on the exterior of the trailer? If I am filling from outside, I would want control outside...

My Fiber Stream has a gate valve between the Fresh tank and the pump. Why do I need that?
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Old 06-17-2008, 09:39 PM   #4
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My approach, which I haven't implemented yet, is to add a valve between the cold water line that runs just above the storage access door on the curb side and the drian hose that runs out to the drain valve by the access door. To fill the tank just connect to city water and open the valve.

Take caution to:

1) Use a pressure regulator on the city water input.
2) Carefully observe the water level in the tank as it fills.
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Old 06-17-2008, 11:25 PM   #5
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Quote:
I usually connect the water system while parked at my home and want to just open a valve to fill up the internal tank.

Rather than pulling the hose connector and then standing and filling the tank for 10 min, it would be nice to open a valve and wait till the overflow starts to gurgle.

Ideas??
Mike,

I'm not familiar with the Bigfoot, but from what I've seen of standard connections. The city water fill goes to the tank via a 1"+ hose. Is there any reason you could not connect a short hose open on one end that would fit inside the gravity fill line to your garden hose?
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Old 06-18-2008, 06:25 PM   #6
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One of those "Tees" with the selectable bypass, plus a second short hose could technically solve your problem without any extensive mods inside your rig.
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Old 06-20-2008, 05:10 PM   #7
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Quote:
How, where can I install hoses and valve to allow me to turn a valve and fill my internal water tank from the connected City water hose.
I usually connect the water system while parked at my home and want to just open a valve to fill up the internal tank.
I have a Bigfoot 17CB which has a standard water system, I believe. Rather than pulling the hose connector and then standing and filling the tank for 10 min, it would be nice to open a valve and wait till the overflow starts to gurgle. There must be a check valve that I can bypass!
I've done this, and it works very well! The only concern I have with the mod is bursting the tank due to overpressure; I plan on resolving that with a larger overflow/vent line. Until then, I open the standard gravity fill before filling from my inside valve.

See my web site for details. http://scamp.n0kfb.org/ and click on modifications and repairs.

-- Dan Meyer
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