VENTILATING AND PRESSURE EQUALIZING VALVE

摘要

Ventilator for placing on a water-proof foil (3) on a distance under a roofing (6) for creating circulation from an air-space under the foil to an air-space under the roofing and consisting of a tube (10) with a length, which is shorter than the distance between the foil (3) and the roofing (6), and with a flange (11) around its end, on which flange a layer of weather-proof paste is brought on the outside away from the tube.