Abstract: A flow control mechanism for an eaves trough downspout has a primary flow path through a housing from an inlet to a first outlet. A tubular arm extends from the housing and has a first end is in fluid communication with a second outlet. A deflector is pivotally secured within the housing for movement between a deflecting position and an inoperative position. In the deflecting position, the deflector deflects a liquid stream flowing along the primary flow path to a secondary flow path through the second outlet. A linkage extends through the tubular arm. A float is positioned at the second end of the tubular arm and suspended from a second end of the linkage. Movement of the deflector between the deflecting position and the inoperative position is tied by the linkage to the position of the float.

Abstract: A flow control mechanism for an eaves trough downspout has a primary flow path through a housing from an inlet to a first outlet. A tubular arm extends from the housing and has a first end is in fluid communication with a second outlet. A deflector is pivotally secured within the housing for movement between a deflecting position and an inoperative position. In the deflecting position, the deflector deflects a liquid stream flowing along the primary flow path to a secondary flow path through the second outlet. A linkage extends through the tubular arm. A float is positioned at the second end of the tubular arm and suspended from a second end of the linkage. Movement of the deflector between the deflecting position and the inoperative position is tied by the linkage to the position of the float.