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Old 04-02-2013, 02:58 PM   #1
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finding the black water release valve

Sounds ridiculous, but I can not find the black water valve on my 2001 alumascape. either the previous owner took it off or it is in a weird location...any suggestions??

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Old 04-02-2013, 03:04 PM   #2
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You're full of crap

Mark Anderson - FMCA 351514 - Louisville, KY
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Old 04-02-2013, 03:30 PM   #3
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Crawl under the trailer and find the big 3" or 4" drain pipe coming out of a holding tank. Follow that pipe to the end of the pipe. Where the pipe ends there should be a handle connected to a valve. Also near the end of the pipe there should be a smaller - maybe 2" pipe - that joins the bigger black water pipe. My setup - and my previous 2000 Sprinter 5er setup, had the black and grey water pipes terminating at a dual valve setup - a big valve for the black water and a smaller valve for the grey water, both feeding into one connection for the sewer hose. Drain the black water first, then close the valve and drain the grey water. That will wash the nasty black water out of the sewer hose. Then disconnect and rinse the sewer hose with fresh water before you store the sewer hose.
Grumpy ole man with over 50 years towing experience. Now my heaviest trailer is a 7,000-pound enclosed cargo trailer, RV is a 5,600 pound Skyline Nomad Joey 196S, and my tow vehicle is a 2012 F-150 EcoBoost SuperCrew.
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Old 04-02-2013, 05:06 PM   #4
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thanks for your reply...on my trailer there are 3 tanks. 2 are gray water and one is black water. the 2 gray water come down and meet the big pipe and they have thier own valves which are easily seen. there just does not seem to be a big one for the black water. I'm hoping that someone will tell me it's in some strange location that I have not thought of looking at yet
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Old 04-02-2013, 05:16 PM   #5
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You could try calling the previous owner, you did keep his number, right?

Or you could go visit a Alumascape dealer, go in the service dept. with a dozen donuts and talk to the service manager.

Your black tank valve wouldn't be electric would it?
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Old 04-02-2013, 06:00 PM   #6
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good one
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Old 04-02-2013, 06:02 PM   #7
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I had'nt thought of an electric valve..could be

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