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Open Roads Forum  >  General RVing Issues

 > black tank valve

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aeohio

New Mexico

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Posted: 08/11/12 12:17pm Link  |  Print  |  Notify Moderator

Any suggestions the valve will not close all the way after I dumped the tank. it will close but the last 1/4 - 1/2 inch will not close.

Any thoughts on what I could do. I have an enclosed underbelly so taking it apart is sort of a chore.

Thanks


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exeter_acres

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Posted: 08/11/12 01:25pm Link  |  Print  |  Notify Moderator

there is probably "debris" in it... could try flushing it from either end...

but may need to remove it.. clear the "Debris" and put it back....


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jamstoyz

Chesterfield MI

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Posted: 08/11/12 01:38pm Link  |  Print  |  Notify Moderator

Maybe try to install one of these and give it a good flush.flush valve


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Ron3rd

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Posted: 08/11/12 01:40pm Link  |  Print  |  Notify Moderator

You could also disassemble the valve and rebuild it with a rebuild kit. But most likely something is jamming it from going fully closed.


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hallock5

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Posted: 08/11/12 02:08pm Link  |  Print  |  Notify Moderator

Inexpensive solution.


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rockhillmanor

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Posted: 08/11/12 03:05pm Link  |  Print  |  Notify Moderator

I JUST went thru this and had the valve replaced. Got tired of trying to bang the dang valve closed so it went in all the way. When I took the valve out it worked just fine pushed in and out smoothly and no there was no clog.

I was then told by mobile repair that screws too tight will do that. He said 9 times out 10 when its hard to push the valve in, loosening the screws a bit will rectify it.

And NO that won't cause it to leak.

And I'm angry because the replacement valves are made like cheap junk and the first guy left with my original ones.


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skipnchar

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Posted: 08/11/12 03:51pm Link  |  Print  |  Notify Moderator

Use a length of coat hanger and clean out the groove it slides in and it should close again. Most likely cause is a bit of TP getting caught in the groove. Might also consider changing brands of TP to something that degrades better.
Good luck / Skip


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Carolina Cruiser

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Posted: 08/11/12 04:06pm Link  |  Print  |  Notify Moderator

Just had the same issue and on mine it was the cable. My repair guy adjusted the cable on the valve and that was that.


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tvman44

Southwest Louisiana

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Posted: 08/11/12 04:36pm Link  |  Print  |  Notify Moderator

I'd try loosening the 4 screws holding the 2 halves of the valve together, like mentioned too tight will cause that.


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Johnworth914

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Posted: 08/11/12 05:38pm Link  |  Print  |  Notify Moderator

The rubber seal could also have come partially off and is preventing it from closing. Unless it is one of the expensive cable valves, I would not bother with rebuilding kits. A new valve will only cost $20 and takes 10 minute to install


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