black tank flush system question...

nike holley wrote:
Hey all...

Our new-to-us coach has a black tank flush system...

connect a hose in the wet bay & it flushes inside the tank...

the problem is, it is plugged... when I hook up the hose (after draining the tank) & turn it on, it pressurizes, but no flow...

I'm guessing that the nozzle/nozzles are plugged..??..

any ideas..??..

Thanks...


Nike

nike holley,
Just wondering, what kind, year model, make and type of coach is all this on?? The reason I ask is because some of us may have the exact same coach and it may be plumbed the same way. Other wise many of us are guessing. Ours is an '04 Itasca Horizon 36GD with the 330 CAT and, it has the black tank flush system. Not sure just how accessible all of your plumbing, lines etc. is beyond the point at which the hose hooks up (our is not too accessible) so, checks in the check valve etc. are not all that easy to get to.

In the mean time, the good ole' tank "wand" that you can get at Camping World and many other RV supply outlets usually does a great job. You can use that until you get your regular flush system working correctly. Be careful about applying too much pressure to that system when trying to flush. It may be that the check valve, as has been stated, is corroded shut and, you might think you need excessive pressure to break that thing loose so, take some care in doing something like that. Good luck.
Scott