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Old 05-28-2015, 03:19 AM   #1
bmar9964
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Black/Gray Water Tanks

We have a new Montana 3611RL. It has 2 black water tanks and two gray water tanks. If the first black water tank is full, does it automatically go to the 2nd tank, or do I have to switch it somehow? I notice only one drain handle for it.

Same for the gray water tanks. There are 2 drain handles, but do the tanks both fill automatically?

Bill and Dayle
 
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Old 05-28-2015, 04:45 AM   #2
DQDick
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On your grey tanks you have one for the shower and another for the galley and they fill and drain separately. In addition, if you have a washer the water will go into one or the other or straight to the sewer outlet depending on how they plumbed it and I've never heard of a good way to know other than trying it. On your black tanks, I'm guessing you have two toilets because the single toilet units only have one. Many times in the past the second toilet black tank has a valve handle other than in the convenience center similar to what they do with the galley tanks.
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Old 05-28-2015, 05:51 AM   #3
Virginia Young
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We had two black tanks on our 3900FB. Each had its own valve handle. I'd keep looking for it.
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Old 05-28-2015, 06:13 AM   #4
jcurtis934
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Look under the unit for the other two handles...close to where the tanks would be. John
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