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Old 02-12-2007, 12:50 PM   #1
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Houston... We have a problem!

Hello all. We are new to this site and any help would be great!

1970 Airstream Caravel

Problem: When water in kitchen or bathroom is on, water backs up into bathroom floor.

When you remove the gray water cap (outside), all water (toilet and sink) comes out regardless if valve is open or closed. Bathroom floor drains as well.

Any suggestions welcomed.
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Old 02-12-2007, 12:54 PM   #2
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Quote:
Originally Posted by mabuofh
Hello all. We are new to this site and any help would be great!

1970 Airstream Caravel

Problem: When water in kitchen or bathroom is on, water backs up into bathroom floor.

When you remove the gray water cap (outside), all water (toilet and sink) comes out regardless if valve is open or closed. Bathroom floor drains as well.

Any suggestions welcomed.
You do not have what is called a "gray water" or now called "wash water" holding tank. water from the sinks and shower goes directly to the drain line. The valve is for the toilet holding tank only. The second holding tank was not installed until the mid 1970's.

Hope this helps.

Bill
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Old 02-12-2007, 12:54 PM   #3
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That year (and other older ones) does not have a grey tank, so all grey water will run onto the ground if the cap is off. There is no valve for the grey. Most of us use a blue portable tank to contain the grey water. The other expensive option is to install a grey tank in the trailer - a lot of work!
Dave
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Old 02-12-2007, 12:57 PM   #4
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Working as designed.

There is no grey water tank on that model. (the factory didn't start installing them until 1974). The grey water drain lines simply terminate in the sewer line, below the level of the black tank valve. Only the toilet empties into the black tank; with the valve closed, that water should be contained, but grey water will just run out onto the ground. If the cap is on, there's no place for it to go, and it will back up into the shower.

beware of this: the black tank sits on the floor; anything accumulated in there will empty to the shower pan, if that valve is open, and the external cap is in place. Some people might tell you that you can let the grey water back-fill into the black tank by doing this; but that only works if the tank is mounted below the floor, and not all of them are.

Back in 1969, they didn't care about soapy water being dumped on the ground, but now, most places do. You either need to be connected to a sewer, like at a "full-hookup" site, or use an auxilliary external tank, often referred to as a "blue-boy" to collect this waste water, and wheel it over to a dump when its full.
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Old 02-12-2007, 01:05 PM   #5
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Do you have a functioning black tank valve. If it is not working you can buy a kit to rebuild it. Then use that dump the black tank at appropriate places and the wash water will just run on the ground or into a blue boy. Get one with four wheels on the ground, they get real heavy fast.
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Old 02-12-2007, 02:04 PM   #6
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With some determination you can rig some PVC pipe to act as a small gray-water tank to accept minor amounts of water ... My '73 bathtub wants to function as a gray tank when I forget, guess it's a whole lot better than the floor...
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