Review on Camco RV Flex Swivel Stik with Shutoff Valve - For Powerful Waste Deposits Dislodging, Flushing and Odor Elimination (40074), 55-1/2 Inches by John Pound

When I first connected this tool, I twisted the water valve on it to see how it worked. Keystone Sprinter road trailer. It happened because I didn't use the "right" toilet paper. My tank black water level gauge showed me that the level would never go below 2/3. /3) and the drain valve left open. I ran my water hose, with this device attached to the end, through my RV. I pressed the bottom valve and put it in the tank. I sprayed the top of the tank to clean it as much as possible. As it began to fill, I lowered the tool below the waterline in the tank, creating a whirlpool. I could hear the swivel turning like a propeller. completely filled, I turned off the water supply tap on the instrument. I listened to the tank slowly starting to empty. Then I suddenly heard it gushing out of the drain! THE PROBLEM IS SOLVED! I leave the tank empty. I turned off the external drain and started cleaning the inside of the tank again. When water filled the truck's tank, this time it was CLEAR WATER! I drained the tank again and checked my pressure gauge. COMPLETELY EMPTY! This is a great product.