The present invention is a butterfly valve (1) that has been modified such that it reduces internal losses in the closed position. The modifications according to the invention reduce losses occurring mainly through the shaft of the flap of the butterfly va...

An exhaust gas return valve for combustion engines comprises a valve element (20) movable between open and closed positions in a valve opening (14) and a flow conduction element (24). The valve element is arranged behind the flow conduction element in the ...

Exhaust gas recirculation control valve (1) comprises a housing (3) having an exhaust gas inlet (6) and an exhaust gas outlet (7), at least one valve closing element (2) arranged in a flow cross-section (5) and operated by a pivoting valve axle (4) running...