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Old 09-14-2020, 04:39 PM   #1
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Black Tank Vented?

Is the black tank vented anywhere?

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Old 09-14-2020, 04:53 PM   #2
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Should be a vent pipe running straight from black tank to roof. Gray tanks should have their own vent pipes although I have seen some drawings where a gray tank shares a vent pipe with the black tank. Possible that multiple grays might share a vent pipe I suppose.


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Old 09-15-2020, 02:59 PM   #3
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Vented through the roof.
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Old 09-15-2020, 07:58 PM   #4
travelin texans
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The black tank should be vented through the roof, but the bath/kitchen sinks depending on locations may have an air emitance valve (see picture) under each sink.

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black tank, tank, vent

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