Patent ID: 6659427
Filing Date: 2003-12-09
Classification: F02D,F16K

Abstract:
A flap valve for controlling a gas flow, comprisinga valve tube (11) carrying the gas flow, a valve flap (14) disposed in the valve tube (11) and being pivotable between a closing and opening position, the valve flap being seated in a manner fixed against relative rotation on a rotatable valve shaft (15) and being dimensioned to cover an inside cross section of the valve tube (1) in its closing position and to maximally open this inside cross section in the opening position of the valve tube, the valve shaft (15) being positioned at an acute angle (&ggr;) relative to the valve plane, and a thin-walled tube (20), integrally formed with the valve tube (11) and elastically surrounding the valve flap (14) peripherally in its closing position.