| 摘要 |
A valve (1), for controlling air flow to a premise, is primarily mounted on or in a window frame (2). The valve (1) comprises a profile (4), which controls the admission of air. The profile (4) is mounted between two corner portions (3), which retain the profile (4) and which also fasten the profile (4) in its closed position as well as its open position. The valve (1) is opened and closed by applying a force, such as a pressure, on the front of the profile (4), while closing being done by letting the corner portions (3) catch the profile (4). A draft preventer (5), on the inner side of the profile (4), guarantees that the valve (1) is sealed and that opening can be done by pressing the profile (4) inward somewhat from its closed position. The profile (4) is detached and initially opened up. |
