View Poll Results: What valves do you leave open when hooked to a campground sewer system?
Black tank open, grey tanks closed? 0 0%
Black tank closed and grey water tanks open? 39 27.27%
All tanks closed? Open only to dump and then close again? 91 63.64%
All tanks open 0 0%
Don't hook up to sewer until ready to dump? 13 9.09%
Voters: 143. You may not vote on this poll

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Old 04-14-2014, 09:31 PM   #41
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Join Date: Jan 2014
Location: On the Road
Posts: 128
Originally Posted by Kaadk View Post
Since I have a built-in black tank flush I see no benefit in holding back the gray water for irrigation of hose after black tank drained. One less thing for me to keep up with by having grays open all the time. I would still need to be outside when I irrigated the black tank anyway. I close grays ONLY when its freezing outside as ice accumulation would close the drainage. I don't see that much freezing weather to justify the expense.

Cost of Gray water valve @ Y-connector: $ 21.43
Twist-on Valve - Valterra T58 - Sewer Fittings & Adapters - Camping World

Cost of the Electric Waste Valve: $ 149.99
Electric Waste Valve - Valterra E1003VP - Sewer Valves - Camping World

Guess I'm cheap as I see no reason to pay an additional $ 125 for the convenience of electric valves. If I were in an environment where its freezing frequently, I could see the benefit of the system as it would eliminate problems of gray water freezing in the hoses and obstructing outflow. In those freezing environments, holding the gray water in a heated tank until time to empty would be ideal.

I'd just like to find a system to automatically empty and irrigate my blank tank so I don't have to mess with that crap!


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2013 Rockwood Ultralite 2608 WS
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Old 04-14-2014, 09:49 PM   #42
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Location: Big Spring, TX
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Both black and gray tanks closed until 2/3 full or time to leave. I dump the black first with a good flush, then the gray. I have a dictated black flush hose.

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Old 05-09-2014, 08:01 PM   #43
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Black and grey tank dump valves

Black closed, grey open all time
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Old 05-09-2014, 08:06 PM   #44
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Location: Desert SW - Arizona
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Gray open until the day before we leave.Black closed until it needs dumped and flush out with tank flush 3 times.
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Life is a journey, not a destination !

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Old 05-09-2014, 08:27 PM   #45
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Posts: 115
I keep the black closed till the day we depart and keep the grey open till the night prior to departure. Then I flush the black 3 times!

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