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Old 04-28-2013, 07:51 AM   #21
Lawdawgg
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Geopaine,

If possible could you send me the information for your contact in reference to the black tank flush system.. Thanks
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Old 04-28-2013, 01:13 PM   #22
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Lawdawg,

The contact information is in my TT along with all of my owner's manuals, and the TT is in storage. I will be getting it ready for the season sometime in the next 2 to 3 weeks. I will send you the contact info then.
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Old 04-28-2013, 01:29 PM   #23
x96mnn
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Attaching some pictures of the setup in my 2012 sprinter 266. Noticed water coming out the floor when using the tank flush for an extended period. Have it going in for service on Tuesday but it may be the way it works which seems to be a very poor location, the electric in is getting soaked.

http://s1265.photobucket.com/user/x96mnn/story/20817
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Old 04-28-2013, 02:17 PM   #24
SteveC7010
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Originally Posted by x96mnn View Post
Attaching some pictures of the setup in my 2012 sprinter 266. Noticed water coming out the floor when using the tank flush for an extended period. Have it going in for service on Tuesday but it may be the way it works which seems to be a very poor location, the electric in is getting soaked.

http://s1265.photobucket.com/user/x96mnn/story/20817
What we have here is the dreaded black tank flush anti-siphon device that has failed. We've chewed on this topic quite a bit as many folks are experiencing failures. Many folks forget to pump some antifreeze through the black tank flush when they winterize. Like the valve in the RV toilets, the anti-siphon device is very prone to breaking if there is water in it when a hard freeze takes place.

Some folks have replaced the plastic one with a brass one and others have simply deleted it all together.

Its proximity to an electric box would not normally be an issue.
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Old 04-28-2013, 05:41 PM   #25
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I just removed my valve and replaced it by simply joining the two lines together. My hookup point is three ft above the tank-can'see anything being forced back through the line. The tank is vented through the roof and if this vent plugs the toilet is not going to flush properly. What I can see how this valve operates it is an accident waiting to happen--water running all over inside the camper. The only venting part of this valve is to allow the water from the valve back to the hookup connection to drain out.
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Old 04-29-2013, 07:27 AM   #26
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I just removed my valve and replaced it by simply joining the two lines together. My hookup point is three ft above the tank-can'see anything being forced back through the line. The tank is vented through the roof and if this vent plugs the toilet is not going to flush properly. What I can see how this valve operates it is an accident waiting to happen--water running all over inside the camper. The only venting part of this valve is to allow the water from the valve back to the hookup connection to drain out.
+1

I ripped that whole leak prone assembly out along with 30' of PEX tubing, rather than joining it under the sink. I just used a SharkBite 1/2" coupler to keep the sprayer working.

Ron W.
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Old 04-29-2013, 07:38 AM   #27
x96mnn
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My issue seems to be a bit bigger then just that one part. This was from the factory this way and reported to my dealer when I picked it up in June, just never had a chance to get it back until now.

Attached is a link to a video that I took of the issue. The RV place gave me the part for up top as I prefer to do it myself but with this, out of my league!

http://s1265.photobucket.com/user/x9...issue.mp4.html
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Old 05-02-2013, 01:26 PM   #28
x96mnn
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Quick update on by black tank flush issue. Just picked the camper up from the dealer, there was a staple through the water line which they stated could have only been done at the factory. Took quite a few hours for the dealer to repair because of the location but warranty looked after it.

On another note they mentioned they saw rust on my centre caps and placed a claim in with keystone on those as well!!
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Old 05-28-2013, 03:29 PM   #29
vsceri
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well it just happened to me this past memorial day weekend
total flood in the bathroom and into the floor
I found the vavle under the sink and tried it again when we got home and sure enough water was spilling out of it
I hope this is not what they meant by normal venting
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Old 02-22-2014, 11:13 PM   #30
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Originally Posted by rjsurfer View Post
+1

I ripped that whole leak prone assembly out along with 30' of PEX tubing, rather than joining it under the sink. I just used a SharkBite 1/2" coupler to keep the sprayer working.

Ron W.
Any updates on if just joining the two ends has worked without any hickups for those who have tried this?
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Old 02-23-2014, 02:40 AM   #31
rjsurfer
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Any updates on if just joining the two ends has worked without any hickups for those who have tried this?
I guess its been over a year since I made the change in the vent plumbing, and after 60 or so nights camping and 5k of trailering all is well.

I did more than just join the ends together I pulled out the entire circuitice Pex run from the tank to the bathroom and back. Another side benefit of doing that, the black tank flush has more oomph than before. I'm guessing you lose pressure going through that valve assembly.

Ron W.
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Old 02-23-2014, 04:40 AM   #32
jsmith948
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X2 - carry the pex in case needed for a repair - kept the vacuum breaker in case we trade/sell the 5er. No problems.
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Old 02-23-2014, 09:14 AM   #33
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Great guys. Sounds like I have a project in my future. Thanks for responding so quickly.

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Old 02-23-2014, 10:05 PM   #34
Geoffwhite18
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That valve was also broken from the factory in our trailer. It was obvious they had super glued it. It leaked all over the place! I took it out along with the extra pex tubing. Be careful doing that. I've had black water come out of the tank flush hookup outside when the tank got full. I'm now trying to find a check valve to put inline. I would just empty the tank before it got full, but since the tank gauges never work I don't know what the level is in the tank.
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Old 03-29-2021, 01:19 PM   #35
Flapjack
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Anyone know where this breaker is located in the sprinter 333 fks .. it seems to come in behind the shower . I have looked under the sink and in all access panels..
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Old 03-29-2021, 02:35 PM   #36
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Anyone know where this breaker is located in the sprinter 333 fks .. it seems to come in behind the shower . I have looked under the sink and in all access panels..
In some trailers it is behind the shower, pull the faucet out and feel behind it.
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Old 03-29-2021, 02:37 PM   #37
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That valve was also broken from the factory in our trailer. It was obvious they had super glued it. It leaked all over the place! I took it out along with the extra pex tubing. Be careful doing that. I've had black water come out of the tank flush hookup outside when the tank got full. I'm now trying to find a check valve to put inline. I would just empty the tank before it got full, but since the tank gauges never work I don't know what the level is in the tank.
After a bit you will recognize the gurgle of a full tank.
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Old 03-29-2021, 02:54 PM   #38
sourdough
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When the commode "burps" a nice little balloon of water when you flush...getting time to dump.
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Old 03-30-2021, 01:42 PM   #39
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This last post y’all are addressing is seven years old.
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Old 03-30-2021, 02:47 PM   #40
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This last post y’all are addressing is seven years old.

Naw Jim, the last post I was addressing looked maybe 75 years old. Couldn't really tell because I couldn't find a brand in the wood.......

Now Javi....we was just shootin' the breeze (and didn't look up far enough to see the post date - me).
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