Camco's Rhino Replacement Tote Tank Holding Tank Rinser with Backflow Preventer is the perfect solution for replacing damaged portable holding tank rinsers. Constructed of durable polymer, this original equipment (OE) replacement part features an integrated tank rinser water inlet with a multi-directional spray to rinse interior sidewalls, as well as a backflow preventer to keep contaminated water from flowing through your hose. This part is compatible with 15-gallon, 21-gallon, 28-gallon, and 36-gallon Rhino tote tank models (Camco #: 39000, 39002, 39004, 39005, 39006, and 39007). It includes (1) backflow preventer flusher assembly, (1) rubber sealing o-ring, and (3) screws for easy installation.