A TORNADO is a water jet spraying device that you install in the side of your black water tank to dislodge foreign material when you are dumping your tank.
It's just one of many ways to clean out the sludge to minimize the odors associated with the black tank. Some folks use a wand type device that you stick down the toilet flap whilst holding it open, and spray water around in all directions then drain a second time. I think the Tornado probably works better, but it requires boring a hole in your tank to install the water jet. Hope this clears up the mystery! Randy
/SIGPIC]'08 V-lite Flagstaff 30WRLS
'06 Ram 1500 QC hemi
Reese dual cam sway control,
K&N series 77 intake, Hellwig helper spgs. LT tires,
Flowmaster "true duals", 380 h.p., Bilstein shocks