Convenience center connections

[F-16 Joc]

Question:
On my 2014 38RL, after I drained my black tank (leaving the black tank valve open), I connected a working, city-water hose to the black tank flusher, turned on the water, heard the water going in, and let it run for several minutes but nothing came out of the black tank drain (watching the clear fitting on the black tank drain). Why is no flushed black tank water coming out? What am I doing wrong?

[rjack]

It sounds as though your blank tank valve could have a block in it, or the dreaded poo pyramid blocking things. When you initially opened the blank tank valve to drain did the black water flow out and empty ok?

As others have mentioned, a good way to clean the black tank and break up any pyramids that could block the outlet is to add a few gal of water through the toilet, a bit of dawn or other dish soap and a bag of ice and go for a few mile drive to have everything slosh around and break up any blockages in the tank.

[F-16 Joc]

I can't imagine there's a block because when I initially opened the blank tank valve to drain, the black water flowed out just fine, and emptied ok. Not touching any valves (so they're obviously still open), and just connecting a hose to the flusher opening and turning it on, nothing came out of the drain. Very puzzled.

[Ford truck guy]

I had that same issue....

evidently when they ( mfg ) did the install they were nice enough to leave me the 3" cut out inside the tank.... It finally got "stuck" in the outlet when I was dumping...

Luckily I had an appointment the following weekend at the dealer for some warranty work and just added that to the small list.

[F-16 Joc]

Originally Posted by Ford truck guy

I had that same issue....

evidently when they ( mfg ) did the install they were nice enough to leave me the 3" cut out inside the tank.... It finally got "stuck" in the outlet when I was dumping...

Luckily I had an appointment the following weekend at the dealer for some warranty work and just added that to the small list.

Thanks for that info. Dunno what to do now; put a plumbing snake up thru the exterior dump opening?

[Ford truck guy]

You can try that BUT BEWARE.. IF you have a plug there and you dislodge it while doing that you will have a HUGE mess all over you and the ground once it starts flowing which will NOT give you warning....

Perhaps you can take a scope down the toilet? I purchased an observation camera that has a 36" long coil on it.... Got it at Harbor Freight for around $90.00.. I have used it for many issues around the house

[travelin' texans]

Originally Posted by F-16 Joc

Thanks for that info. Dunno what to do now; put a plumbing snake up thru the exterior dump opening?

If the floating coupon is you problem it will be messy to move/remove it so just be prepared & located somewhere the mess is not an issue.
Personally would recommend using a snake on any rv plumbing! An old water hose would safer up through the drain.
Or try one of these type fittings
ImageServer_e11ced31-080c-452b-aafb-5e5f4bf4bac9_1024x.jpg

F02-4350_bulk_1024x.jpg

[jrlsburns]

My Black Tank Flush has been intermittent several times. Don't know why. As long as you can dump the tank.










2007.5 Chev Dually, B&W Companion, RDS 50 Gal. Transfer Tank
2012 36RL, Titan Disc Brakes, Upgraded Springs, MORryde wet bolts, MORryde Crossmember, Sailun Tires

[travelin' texans]

Originally Posted by travelin' texans

If the floating coupon is you problem it will be messy to move/remove it so just be prepared & located somewhere the mess is not an issue.
Personally would recommend using a snake on any rv plumbing! An old water hose would safer up through the drain.
Or try one of these type fittings
Attachment 3966

Attachment 3967

That should've read DO NOT use a snake in rv plumbing!!!

[F-16 Joc]

Originally Posted by travelin' texans

If the floating coupon is you problem it will be messy to move/remove it so just be prepared & located somewhere the mess is not an issue.
Personally would recommend using a snake on any rv plumbing! An old water hose would safer up through the drain.
Or try one of these type fittings
Attachment 3966

Attachment 3967

That clear attachment with that Valterra valve is exactly what I have. Since the black tank pull valve at the convenience center is very difficult to open and close, I’m concerned someday that it’s going to fail so I’m considering leaving the black tank pull valve always open at the convenient center and just use the Valterra valve at the end for opening and closing for dumping. What does everyone try think of that?

[Blenhardt]

Originally Posted by F-16 Joc

I’m considering leaving the black tank pull valve always open at the convenient center and just use the Valterra valve at the end for opening and closing for dumping. What does everyone try think of that?

I too have been thinking about doing this and would like others opinion.

[travelin' texans]

In my case that wouldn't work! With the shower & washing machine going into the same grey tank when connected to sewer I left that valve open or was dumping every other day. So with the add on closed & the black valve open I wouldn't be able to do that.
From working on mine & a fellow RW owner we found that due to the way they ran the very long cable that the angle it was attached to the valve was pulling at about 90 degrees rather than straight out. We rerouted the cable & lubed them on both RVs & on one we rotated the valve body a 1/4 turn so that cables pulled straight making them work 110% easier.