A powder inhaler comprising a powder container, an air channel, a metering member
equipped with a dosing recess, an actuating means for the displacement of the metering
member between the filling and the inhalation position, and a closure element for
plugging the air channel in a substantially water-proof manner when the metering
member is in the filling position and opening the air channel when the metering
member is in the inhalation position. When the inhaler is not in use, the closure
element prevents moisture and dirt from entering the sensitive parts of the device.
