You can also buy a Valterra pipe fitting, cut the old Thetford fitting off and glue on the Valterra. When we picked up our 2002 Classic (trading our 2001 Safari which had a Valterra valve added after the two original valves) I moved my Camco hoses over to it but discovered they didn't fit. The dealership didn't have the adapter, but a Camping World on our route had the end fitting. I stopped in a Home Depot and bought a Dremel Tool to cut the old fitting off and some glue to glue the new one on. I changed it in the parking lot, in the cold, in the rain; but we could dump on the way home.
"You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins