Device for ventilating a pipe network, especially a long distance energy network, comprises an annular chamber with elastic annular seals arranged below a blocking device

摘要

Device for ventilating a pipe network, especially a long distance energy network, comprises an annular chamber with elastic annular seals (4, 5) arranged below a blocking device (2). Each seal is flattened by a clamping unit in the axial direction so that it expands in the radial direction and lies under stress on the outer surface of a riser pipe (1) and also on the inner surface of the jacketed pipe. The jacketed pipe is made from polyethylene or other material. Preferred Features: The device has a ventilating line with a pipe bend connected to a lower flange. An upper flange is connected to a feed/removal line.