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Old 01-27-2021, 07:56 AM   #1
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Outback second grey tank?

Looking at purchasing a 2016 keystone outback 3216rl. I noticed a second waste port near the rear with a valve on it. There is the main waste port in the center with 2 valves. All the literature I can find does not show a second grey tank for this model. Does anyone have this trailer that can enlighten me?
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Old 01-27-2021, 08:19 AM   #2
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I have a 16 298RE with the same dump outlets...the valve with the 2 handles is the Black tank and Grey Tank 1 (Shower/Bathroom Grey water). The one valve by itself is Grey 2 (Kitchen Sink Grey tank)
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Old 01-29-2021, 07:00 PM   #3
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I have an Outback 260UML, same grey tank setup. You can either swap the hose around when dumping or pick up Y adapter to connect both tanks to a single sewer connection.
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grey tank, tank

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