Camco 39085 Rhino Blaster Sewer Tank Rinser with Gate Valve Direct jet allows water stream to rinse and flush RV sewer systems Rhino Blaster Pro Tank Rinser securely attached to RV sewer outlet via bayonet swivel fitting Gate valve prevents backflow into sewer hose Vacuum breaker prevents backflow into water hose Clear 45 degree elbow allows direct flow of water into sewer system