Line connector and line set for fluid media

A line connector with two mutually separate flow paths for connecting a pipe-in-pipe line having a first line and a second line, the line connector comprising:

• an attachment part, a pipe adapter part and a connecting sleeve as individual components;
• the attachment part including a first attachment element and an inner connecting element unitarily formed therewith, the inner connecting element being an inner cylindrical extension configured to connect to an inner pipe of the pipe-in-pipe line, the first attachment element being a first cylindrical extension configured for attachment to the first line, and a flow path from the inner line to the first line being defined through the attachment part;
• the pipe adapter part including a unitarily formed outer connecting element being an outer cylindrical extension configured for connecting to an outer pipe of the pipe-in-pipe line;
• the connecting sleeve including a second attachment element unitarily formed thereon as a second cylindrical extension that is configured for attaching the second line to a flow path of the outer pipe, the connecting sleeve connecting the attachment part to the pipe adapter part, and wherein the connecting sleeve is configured at both sides to, in the unassembled state, be pushed over the outer pipe, and at the end facing toward the attachment part be pushed over the pipe adapter part and onto the attachment part;
• an access space provided between the attachment part and the pipe adapter part and configured to provide access to the inner connecting element and the inner pipe for producing a welded connection, wherein, in an unassembled state, the space can be accessed from the outside by pushing the connecting sleeve over the pipe adapter part in the direction of the outer pipe and, in an assembled state, and the space can be closed by pushing the connecting sleeve over the pipe adapter part onto the attachment part;
• and wherein the inner connecting element extends from the attachment part over the entire axial length of the access space to an opening of the pipe adapter part facing the attachment part.