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Old 03-02-2016, 06:41 AM   #1
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1972 Argosy 26
1973 Argosy 26
Fairmont , West Virginia
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Question 72 Argosy Add Grey Tank

Has anyone added a grey tank to there coach? Please send pics of your installation.

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Old 03-02-2016, 07:26 AM   #2
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Morrill , Nebraska
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72 Argosy Add Grey Tank

I carried a tote for a couple of years, but soon tired of hauling (pulling) it to the dump station.
I did not want to tear into the floor and framework of the coach. So I installed a 21 gallon tank under the curb side bed. Connected the discharge of the new tank into the sewer line from the galley sink (the sewer line passes under the bed and has a clean out just before it goes thru the floor into the original grey water tank) via a ball valve.
I installed a pump in the trunk and the necessary 1/2" piping ( PEX) from the pump to the new tank. I use a termination cap with a garden hose fitting to connect the suction side of the pump to the original sewer line.
When the original tank (12 gallons) is full I connect the pump suction hose, start the pump, open the original grey water dump valve and transfer the grey water to the new tank.
I now have 33 gallons of grey water capacity.
When both tanks are full I dump the original tank first. Just as before.
Then open the dump valve (ball) for the new tank. The new tank grey water flows into and out of the old grey water tank thru the original sewer lines.
While a little unorthodox it is much easier than dealing with a tote.
An inline filter is installed in the suction line to the pump to catch anything that might plug or damage the pump.
The cost was less than that of a 10 gallon tote.
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