Dust-fight, releasable pipe joint, particularly for radioactive and toxic bulk goods

The pipe joint can be used with pipes conveying bulk goods of e.g. nuclear fuels and heavy metal containing particles with U or Th compounds. Between the two flanges on the pipes to be joined, there is a third movable flange which is tightly fixed to one of the flanges by means of a bellow. The movable and other fixed flange are sealed by superimposition. The one real is like a soft roll, the other like a hard elastic cutter. Both seals are pressed on top of one another by means of a pneumatic or hydraulically applied pressure cylinder, whereby the pressure force is exerted between the movable flange and the flange attached to the bellow and the latter compensates for slight tilting. (DG)