Valterra Water Heater Flush Kit. By doing so it helps extend water heater life and restores heating efficiency. Attaches to a standard 3/4" garden hose connection and includes shut-off. Features of Valterra A10-4010VP Water Heater Flush Kit Water heater flush kit Flushes and removes built-up sediment from the bottom of the hot water heater Extends water heater life Restores heating efficiency Package Contents: Valterra A10-4010VP Water Heater Flush Kit Valterra A10-4010VP: Water Heater Flush Kit