Patent ID: 8808071

Claim:
A control unit for actuating pressure relief valve of an aircraft cabin, comprising: a housing, an actuating body variably positionable in a first chamber of the housing along a connecting line extending between first and second openings in the housing, a pressure-controlled actuator variably positionable in a second chamber of the housing, a first channel through the housing for communicating ambient pressure to the second chamber, a second channel through the housing for communicating aircraft cabin pressure to the actuator, the first and second channels providing for applying a differential pressure on the pressure-controlled actuator, the pressure-controlled actuator providing for controlling operation of the actuating body at a predetermined threshold value of the differential pressure, and the threshold pressure value being adjustable by a first adjustment unit and a second adjustment unit, wherein the actuating body is adjustable within the first chamber by the first adjustment unit and the pressure-controlled actuator is adjustable by the second adjustment unit.