Swivel Stik Tank Rinse with Shut-Off Valve New easy turn handle. Camco’s convenient RV swivel stik holding tank rinsers with shut-off valve dislodge and flush stubborn waste and odor-causing particles remaining after holding tank is emptied. Powerful rotary cleaning action reaches all corners and walls of tank. 1/4 turn shut-off valve at your fingertips. All brass moving parts.