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Old 11-02-2010, 12:23 PM   #1
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Blackwater valve handle won't shut or open all the way

We have 1997 34' Excella.

I was pushing in on the black water handle and it wouldn't shut all the way after I was emptying it. The next time I went to empty the tank I pulled it out and nothing came out of the tank. I can't shut the handle all the way.

Any ideas about what is going on?
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Old 11-02-2010, 12:30 PM   #2
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Originally Posted by melbel View Post
We have 1997 34' Excella.

I was pushing in on the black water handle and it wouldn't shut all the way after I was emptying it. The next time I went to empty the tank I pulled it out and nothing came out of the tank. I can't shut the handle all the way.

Any ideas about what is going on?
I would say that there is a 90% chance that something is blocking the opening from the tank and thus the valve. Probably a wad of toilet paper or something similar.

Get something like this:
Amazon.com: Camco 39062 RV Dual Flush Pro Holding Tank Rinser with Gate Valve: Automotive: Reviews, Prices & more
and back flush the tank, hopefully that will dislodge the blockage.

Regards,
Ken
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Old 11-02-2010, 01:10 PM   #3
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I have a similar product installed, fine for emergency quick fix, but by the sound of your problem, your present valve is jammed closed. HD or Lowe's sells a jet nozzle for end of hose, you might be able to push hose from the discharge opening up to the sliding valve, if it can be opened, you will need to dump so best bet would be to have dump hose connected while cleaning.
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Old 11-02-2010, 01:20 PM   #4
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Quote:
Originally Posted by melbel View Post
We have 1997 34' Excella.

I was pushing in on the black water handle and it wouldn't shut all the way after I was emptying it. The next time I went to empty the tank I pulled it out and nothing came out of the tank. I can't shut the handle all the way.

Any ideas about what is going on?
Not sure of the 97 set up but there may be linkage between the handle and the valve that has come loose.
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Old 11-02-2010, 01:22 PM   #5
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Thumbs down Not a good idea?

Quote:
Originally Posted by DaveFL View Post
I have a similar product installed, fine for emergency quick fix, but by the sound of your problem, your present valve is jammed closed. HD or Lowe's sells a jet nozzle for end of hose, you might be able to push hose from the discharge opening up to the sliding valve, if it can be opened, you will need to dump so best bet would be to have dump hose connected while cleaning.
"I can't shut the handle all the way" sounds like the valve is jammed closed?

It sounds to me like the blockage is preventing the valve from closing as well as preventing the tank from draining.

Shoving something up the pipe right now is apt to cause a real mess when the blockage is finally relieved. I sure would not want to be around for that.


Regards,

Ken
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Old 11-02-2010, 01:31 PM   #6
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Usually it means a piece of toilet paper is caught between the valve and the opening preventing it from closing all the way. Try back washing with a garden hose. Have the slinky at hand already in the sewer. Remove the hose with one hand after back washing, ( gloved of course), and put the slinky over the opening wth the other hand....quickly. Or just close the valve, attach the slinky and reopen the valve.

John
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Old 11-02-2010, 01:49 PM   #7
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Usually it means a piece of toilet paper is caught between the valve and the opening preventing it from closing all the way. Try back washing with a garden hose. Have the slinky at hand already in the sewer. Remove the hose with one hand after back washing, ( gloved of course), and put the slinky over the opening wth the other hand....quickly. Or just close the valve, attach the slinky and reopen the valve.

John
I will say this one more time and then go way and let it happen.

She says she opened the valve and nothing flowed out.

That means that the tank outlet is either blocked or the tank is empty. I am guessing it was not empty or she wouldn't have been trying to drain it. (there is a slim possibility that the linkage between handle and valve is broken)

She says it wont close all the way. that means that something is blocking the valve.

Don't stick a hose up there. There is a good chance that will result in sewage all over the ground, Or all over you if you are trying to get the sewer hose attached while this is going on.

Get an attachment that will allow you to have the valve open or partially open while providing water pressure to build up between the blockage and the valve on the attachment.

Ken
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Old 11-02-2010, 02:23 PM   #8
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You can backwash with a Flush King. The slinky is attached to the end with a large gate valve to drain the tank. At the side is a garden hose doing the flushing with a ball valve to turn off the garden hose water. Something that is wedged in there may not come out and further exploration is necessary.

It sounds to me (and I've never taken the thing apart) that either the handle is separated from the valve and/or the valve is jammed by something stuck in it, possibly causing the handle to separate from the valve. If you use a Flush King and the valve is closed, the pressure from the garden hose water will build very fast and start leaking around the Flush King gate valve and you can relieve it by opening that valve and letting the water run down the slinky. Or shut off the garden hose (small) valve on the side and let the water soak the valve and possibly what is stuck.

This is not something I would like to have to fix given the perhaps inevitable opportunity to be soaked with sewage. At least you know it's yours rather than a stranger's. I suppose it's possible to pump out the tank from the toilet, although there will still be stuff in the tank, but that's better than 10 gallons of stuff.

My black tank valve is not operating well lately and I fear that either I will pull the handle free, or the valve will stick and I will be learning more than I want to know. I back flush weekly when traveling, but something, probably toilet paper, could stick in the valve opening. I wonder if there's a way to lubricate the handle so it works better?

Gene
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Old 11-02-2010, 02:40 PM   #9
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.....................................

My black tank valve is not operating well lately and I fear that either I will pull the handle free, or the valve will stick and I will be learning more than I want to know. I back flush weekly when traveling, but something, probably toilet paper, could stick in the valve opening. I wonder if there's a way to lubricate the handle so it works better?

Gene
Here is somtehing that is supposed to work. Don't know if it does though.

Thetford Corp - Thetford Drain Valve Lubricant - 20 oz. - Sewer Chemicals - Camping World

Ken
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Old 11-03-2010, 08:56 AM   #10
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Talking

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Originally Posted by w7ts View Post
Here is somtehing that is supposed to work. Don't know if it does though.

Thetford Corp - Thetford Drain Valve Lubricant - 20 oz. - Sewer Chemicals - Camping World

Ken
I have a problem understanding how this product would work on plastic slider operation, unless you put it on the TP before use so that as it sticks in the valve track lubicant is applied to the track. lol

here are the CW directions.
Thetford Drain Valve Lubricant solves holding tank problems.
Lubricates valve for easy operation. Non-staining, formaldehyde-free and environmentally safe. 2 oz./40 gal. tank. USA.
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Old 11-03-2010, 10:38 AM   #11
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I have a problem understanding how this product would work on plastic slider operation, unless you put it on the TP before use so that as it sticks in the valve track lubicant is applied to the track. lol

here are the CW directions.
Thetford Drain Valve Lubricant solves holding tank problems.
Lubricates valve for easy operation. Non-staining, formaldehyde-free and environmentally safe. 2 oz./40 gal. tank. USA.

Perhaps it doubles as a substitute for Preparation H

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Old 11-03-2010, 12:37 PM   #12
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Perhaps it doubles as a substitute for Preparation H

Perhaps it has to be done by a gastroenterologist—after all, they flush you out first—but it's not like a colonoscopy. I think that you put 2 oz. in the tank via the toilet after you flush the tank. I think it's made for grey tanks too. A specialist is unnecessary.

Gene
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