Redrider910
Alberta
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Joined: 03/30/2008
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Has someone add a pump to transfer from the gray tank to the black tank???
I find my self all ways adding fresh water to the black tank before dumping. Also the gray is all ways full way before the black tank when were dry camping.
Thanks Redrider
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quabillion
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put the cap on the 3 inch "outlet" pipe and open both gray and black valves.
The tank levels will equalize assuming that the rig is level.
Perhaps tilt the rig towards the black tank to get more into it.
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gamingdad
Anchorage Alaska
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If this is so, don't you think there would be some "stuff" coming out that you would rather not have lying around when going to dump??? Just my thoughts...
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quabillion
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If you do it right, the "stuff" will be gray water. Which can be much easier to handle.
Just place a bucket or suitable catch pan under the cap when opening.
Its not that big of a deal, and the alternative is $$$
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mosseater
Dillsburg, PA
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I suggested this quite a while back and was soundly trounced even with the flame suit on. I mentioned it as a way to help flush out the black tank after dumping it, but I think it would work for this problem too. We tend to fill up the grey a lot faster than the black also. I suspect we will now get the crowd saying they don`t want bacteria in their grey tank. But again I ask you, what about that raw chicken, eggs, other neat stuff you washed down the drain?(flame suit, ON)
I ,too, think the grey will always flow into the black as long as the grey is fuller than the black and the tanks are mounted at the same level. You could lessen the problem of residual fluid in the y-pipe by using one of those flusher thingies with the extra valve on it. Someone help me out here, what`s the name of the it?
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quabillion
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The ???king?
That thing?
LOL
Flushking I believe is what mosseater means.
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Dick_B
Palos Heights, IL USA
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Install a `Sewer Spill Eliminator' on the end of the discharge piping and all the gray/black stuff will be contained until you open the valve. CW has a look-alike version, I think.
Yes it costs money; about six gallons of gas.
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rockhillmanor
On the Road
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mosseater wrote:I suggested this quite a while back and was soundly trounced even with the flame suit on. I mentioned it as a way to help flush out the black tank after dumping it, but I think it would work for this problem too. We tend to fill up the grey a lot faster than the black also. I suspect we will now get the crowd saying they don`t want bacteria in their grey tank. But again I ask you, what about that raw chicken, eggs, other neat stuff you washed down the drain?(flame suit, ON)
I have to admit I did immediately think the same thing.
BUT, the small amount of water kept in the toilet bowl is the 'only' thing that keeps the sewer gas/bacteria from escaping into your coach.
The p-traps in the sinks would function in the same manner and actually better because it 'always' stays there preventing anything from coming back up thru the pipes.
Actuallly because there is no s-curve to hold water in an RV toilet, when we flush an RV toilet we 'open' that lever straight to the tank and it 'stays' open while we flush.....letting booey bacteria to enter the air right where we are standing.
Soooo 'technically' the sinks to gray tanks 'are' much safer.
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31 tundra
Elizabethtown, pa.
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Joined: 11/22/2007
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I read an article about this subject and I will try to find and post a link. This person took a waterpump and hooked to the gray tank and then plumbed into the black tank vent tube. In doing this, it insured that there would never be any back flow into the gray tank because the black tank would never get to that level. When the gray got full, he simply hit a switch and transfered to the black.
here is the link
* This post was
edited 10/01/08 07:46am by 31 tundra *
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H & E
North Texas
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We stayed at a campground that came around and pumped the tanks with a honey wagon. The guy opened both valves at the same time. The next time I dumped there was some dark water in the gray. I filled the tub and let it flush out the gray tank a couple of times and now I just get gray water from the gray tank. Based on that I would never open both valves at the same time.
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