Connecting device for connecting a first pipe end to a second pipe end

A connection device for connecting a first line end to a second line end, wherein

• the first line end has a radial first extension having a first front face and a first back face;
• and
• the second line end has a radial second extension having a second front face and a second back face;
• and the connection device comprises:
• a support ring that can be brought into contact with the first back face or the first extension;
• a blocking device that is connected or releasably connectable to the support ring,
• wherein, in the installed state, the support ring or the blocking device projects axially over the first front face and forms a reception opening in which the second extension can be introduced;
• and
• a blocking member that is movably supported in a radial direction in the support ring and/or in the blocking device;
• wherein
• the blocking member can be adjusted by means of the blocking device between an open position in which the second front face can be brought into contact with the first front face and a closed position in which the blocking member applies an axially acting closing force to the second back face so that the second front face is pressed against the first front face, the blocking member is displaceably supported in the blocking device in the radial direction and the second back face has a second front surface inclined with respect to the second front face, with the blocking member applying the closing force to the second back face, wherein
• the blocking device comprises:
• a first ring that is releasably connectable to the support ring;
• and
• a second ring that is rotatably connected to the first ring in an axially fixed manner, with the second ring cooperating with the blocking member at a setting surface and the setting surface having a varying distance from or along an axis of rotation of the second ring.