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Old 01-13-2023, 06:33 PM   #1
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Gray and black water drains

I have a Dutchmen Aspen Trail 3010 BHDS and the gray and black water drains are separate by about 8’ apart.
Is there any reason why I can’t tie them together like most other RV’s? It looks like there is plenty of room. The gray water tank is closer to the black water drain than where they have the drain coming out now so it would be a shorter run if tied together.
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Old 01-16-2023, 08:25 PM   #2
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they have T where you can join them together as if you had two distinct outlets... Don't do them too close to the outlet since you are going to be leaving the gray drain open most of the time.
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Old 01-25-2023, 08:34 PM   #3
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they have T where you can join them together as if you had two distinct outlets... Don't do them too close to the outlet since you are going to be leaving the gray drain open most of the time.
Most people do not leave their gray drain open. We use the gray water to rinse the hose after draining the black water.
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Old 01-25-2023, 08:40 PM   #4
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You leave your gray water drain open if you are going to be long term then close it a few days before you leave so you have enough saved to “rinse” the sewer hose out.
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Old 01-25-2023, 09:18 PM   #5
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You leave your gray water drain open if you are going to be long term then close it a few days before you leave so you have enough saved to “rinse” the sewer hose out.
The only time we're somewhere longer than 4 days is 2 weeks of dry camping in a National Forest so I had not thought about that but makes sense.
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Old 01-26-2023, 06:18 AM   #6
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p-trap

Just remember to create a p-trap with your hose if leaving either drain open or you'll be venting the sewer out of the tank vents on your roof. Nobody wants to be that guy. Or their neighbor.
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Old 02-06-2023, 04:43 PM   #7
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I never leave my gray valve open.
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