Ventilator or flue has conical connector below roof which connects pipe above it with that below it, base of connector forming annular trough in which condensate collects and is run off through outlet

摘要

Ventilator or flue has a conical connector (11) below the roof which connects the pipe (4) above it with that (3) below it the base (6) of the connector forms an annular trough in which condensate collects and is run off through an outlet (8, 9). An Independent claim is included for a similar ventilator or flue with an absorbent foam ring mounted in the connector.