[pestes]

Paul, where did you buy the new vent covers? Both of mine are gone. Without vent covers where does the water go?

I just got the Camco one from Amazon. They also sell them at Camping World and elsewhere, I think about any RV parts store. The broken ones were Ventline brand.

Without covers, it depends -- if the vent pipe is fully sealed around it to the roof, then water should only be able to go down the vent. And that just runs into your waste tank. Or at least it should.

If it's not fully sealed around the vent pipe then the water will go down into the coach where ever the pipe goes. In my case there are 2 - one to the washer/dryer drain line in the rear bath and one to the half bath sink. I'm not yet sure how the kitchen sink vents. Possibly an air admittance valve?