Originally Posted by JConsroe
I have always used the blackwater flush water connection to fill and flush my tank after a dump. On a recent trip after boondocking for 5 days, there was no flow at the dump station. I went on down the road and added a bag of ice to the tank to slosh around and clean it up, see if this helped the problem.. it did increase the flow from nothing to about 1/3 of what it used to do. What is the spray mechanism in a 2005 international? I did find a check valve behind the sink so maybe this is the culprit but it's a $45 part and in a very awkward spot. wondering if anyone else has experienced this? I searched the forums and cant find anything. thanks!!
J, there is some discussion re replacing the BW check valve and the challenges therein. Damage presumably from freeze damage. This part should never be plastic especially in it's location in the 20, presumeably the same in all models.
Try a search in the 20 footers thread. I'll look when i'm on a different device. I