BYPASS VENTILATOR

A ventilator (100) comprising a housing (10) comprising a first flowpath (13) extending from a first inlet (12) to a first outlet (14), and a second flowpath (17) extending from a second inlet (16) to a second outlet (18). The housing further comprises a partition (30) defining a first chamber (24) therein. The ventilator further comprises a second chamber (26). The first flow path extends through the first chamber and the second chamber, and the second flowpath extends through the first chamber. The ventilator further includes a movable damper (28) disposed in the first flowpath and configured to apportion a quantity of a first fluid flowing therein between the first and second chambers. The second chamber and the movable damper are configured in a removable part (300) adapted to be fitted in place of a cover part of the housing of the ventilator.