| 摘要 |
1. Building inlet for a plastics pipe for supply lines, in particular for gas and water, with a protective metal pipe (2, 5; 17) secured in the building wall in which the plastics pipe (1) is arranged coaxially with radial clearance, having a connecting pipe or connecting fitting (4) which is screwed in medium-tight fashion with the protective pipe (2, 5; 17) on the front directly adjacent to each other, by means of a clamping nut (7), with a pipe insert (9) pushed into the end of the plastics pipe (1), with a radial flange projecting over the front end of the plastics pipe (1), and with a seal (13) arranged at the outer circumference of the plastics pipe end, which seal abuts the inner surface of the connecting fitting (4), the flange of the pipe insert (9), the plastics pipe (1) and an inclined contact surface at the front end of the protective pipe (2, 5; 17), characterised in that a refractory outer seal (8) is arranged between the protective pipe (2, 5; 17) and the connecting fitting (4), in that the inner seal (13) is resistant to high temperatures, in that the connecting fitting (4) has an inspection aperture provided with releasable closure means (15) and with a refractory seal (16), and in that the plastics pipe (1) and the protective pipe (2, 5; 17) are also held spaced apart in the connection area. |
