We have a backflow preventor on the water spigot in the garage. A water hose is attached that has a sprayer on the end. Every time we turn the water off from the hose and even with the sprayer left open and the water running, water shoots out everywhere onto the floor, walls, garage walk-through door, etc. I know according to code that it has to be there but it is causing damage to the wall and trim in the garage. Any recommendations or fixes?