Flap element for use in exhaust gas pipe aerator of flap element and ventilation pipe arrangement for air ventilation in areas, has flap deflected from horizontal rest or closing position into open position about pivot axis

摘要

The flap element (1) has a pipe piece (2) with a stop element (5), and a flap (3) that is arranged in the pipe piece. The pipe piece is provided with a main axis (HA). The flap is fixed in the pipe piece that is pivoted about a pivot axis (SA), where the pivot axis is aligned perpendicular to the main axis. The flap is formed as gravity flap and is deflected from a horizontal rest or closing position (A) into an open position (B) about the pivot axis based on a suction effect in a lower portion (7) of the pipe piece.