Cardinal RV Club

Evidently this valve is really stuck. I used my compressor with blow out hook up and up 35 psi and it would not allow any air flow. The flush out itself has a screen covering the opening, so I fail to see any logic in an anti siphon valve. If I find it there may be a an antisiphonectomy and replacem...

Thank you for the assist. I'll attempt your suggestion.

We purchased a used 2010 3450 RL recently replacing our old NUWA and I immediately registered in this forum. We are learning the rig now for a trip. I have not studied where someone has posted something similar, so here goes. The previous owner was, shall we say not as concerned about RV maintenance...