What makes the flout better than a D-box alone?
The flout can resist the effect of frost heaves better. It has a larger area and is heavier than a D-box. It also tolerates an out of level condition, yet still will function properly. The high level of water in the tank and the fact the outlets are completely submerged during the discharge cycle, insure the discharge pipes are fully flooded the whole time water is flowing from the dousing tank. All the outlets will see the same amount of water pass through them, every time. The basic design uses one or two outlets but up to eight (even or odd) may be installed in the tank. This allows every leg of the leach field to have its own outlet from the dousing tank if desired. The flout design also allows the placement of the leach field laterals parallel to the side of a hill, making an easy, practical solution to one of the most difficult leach field sand filter design problems. The overflow pipes act as a vent and will insure each outlet has an equal amount of water, no matter how far the
