RecPro? RV Vacuum Breaker Check Valve Protect Fresh Water from Pollutants 571-VAC-CHK-A

Although this piece is small and simple-looking there are several points that need to be addressed when it comes to proper water safety and installation. First, this should only be used on one fixture at a time. This keeps the pressure in the line predictable and the vacuum breaker able to handle it. Second, this vacuum breaker is a high-hazard protectant, which means that it protects the potable water supply from toxic materials. Because of this, it can be used in a low-hazard application as well. Third, it should be installed a minimum of 6 inches above the highest point of any item connected to the waste tank where the flusher is installed. This vacuum breaker should also not be under more than 12 hours of continuous water pressure. This could cause the check valve to shut or become stuck. Fourth, make sure that this vacuum breaker is installed upright. It relies on gravity to properly function and if it is installed in a different position, the valve may not fully open.