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Old 08-04-2012, 07:54 AM   #1
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Hi, Question. When dumping tanks if you dump your Black and leave the valve open then before you open your Grey you hold your sewer hose high will this force grey water into the black holding tank?

My sani- flush seems to leak more water then goes into the black tank for rinsing. Local dealer says it is doing the job however I cannot believe it is ok to leak so much water how can there beeffectivepressure.

I know this is a regular complaint so I was thinking forcing the grey back by preventing gravity flow may work. OfcourseI would leave the end connected to the sewer Am I on the right track what do you think? Thanks for any input or info.
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Old 08-04-2012, 09:18 AM   #2
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If all tanks are drained via the same drain and the hose is shut off then it guess it would equal out and some gray water would run into the black tank. But holding the hose high enough would be risky and then once you have waste in the hose getting into the drain with out making a mess. I would not do that ... however, they do have a shutoff valve at CW you could attach between the drain and hose. Shut that and equalize the tanks guess that might work. But if you are just wanting to flush the black I would put a garden hose down the toilet would work better.



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Old 08-04-2012, 11:01 AM   #3
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I agree with GnD. Messing with the full hose is asking for trouble. Where is your flush hose leaking? It should not leak at all. Use the flush hose or a garden hose as suggested and leave the drain hose alone.



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Old 08-04-2012, 11:14 AM   #4
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Hi Thanks But wait my flush hose is notleaking. .it is the connection to the sani flushthatleaks. I read something about this on a boondocking web site so I wanted to verify that info elevating the waste hose. I appreciate your input. Thanks Al
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Old 08-04-2012, 11:23 AM   #5
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Hi thanks folks. I can investigate some new ideas. Thanks for the input!!Happy trails Al & Laura
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Old 08-04-2012, 01:17 PM   #6
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Had a similar leak withthe sani-flushon our first TT. Discovered a fitting popped off one of the connections, probably one of the times I didn't use a pressure regulator.
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Old 08-04-2012, 03:14 PM   #7
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"Hi, Question. When dumping tanks if you dump your Black and leave the valve open then before you open your Grey you hold your sewer hose high will this force grey water into the black holding tank?"









My 2010 cruiser has a valve a few inches from cap. This can be closed after the black tank is drained and by opening the grey valves, I can get grey water into the black tank for additional flushing.



Could be a fun scene(for someone watching!) the way you propose.
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Old 08-05-2012, 12:12 AM   #8
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Hi Thanks I did mention that the hose wouldremainconnected to the sewer, I would not raise the end of the hose. Did you install that valve? Idon'tbelieve it is standard.
I'll investigate this it makes sense. Thanks It was mentioned above by Geondebi that CW has such a valve.
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Old 08-05-2012, 01:29 AM   #9
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I was tired of taking off the cap and the gamble of what was going to come out. Sometimes valves leak and sometimes they do not. Since new I had this problem and after being blue in the face I bought this twist on valve and it is on all the time. After that it was a sure thing I was not going to get anything out the cap. In your case it would be a way to shutoff the drain to the hose. I have an 05 PP and I have had the cover off and noticed the tanks are close together. I am also guessing you may have a valve for galley and gray (shower) so you might be able to get a second wash.

Here is a link to the valve I have must tell you it was the best 23 dollars I have spent.
http://www.campingworld.com/shopping/item/twist-on-valve/27868




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Old 08-05-2012, 02:18 AM   #10
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Hi geondebi. Thanks for the info and the link. I just ordered the twist on valve. I believe this will be an easy and practical solution. Hopefully I will figure out the Sani-Flush connection problem.
Once again the CR forum proves to be a wonderful resource. Thanks to all who responded.
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