Connection piece for connection of expansion valve with pipe line in motor car air conditioning apparatus, has portion formed between end region and flange, and portion formed between another flange and third flange, which forms end region

摘要

The connection piece (1) has a first flange (4), a second flange (5) and a third flange (6) arranged on an outer contour (3) and spaced at a distance to each other along a main expansion direction (7). A portion (8) is formed between an end region (11) and the first flange. A second portion (9) is formed between the first flange and a second flange (5). A third portion (10) is formed between the second flange and the third flange. The third flange forms another end region (12). A circulating groove (13) is introduced into the outer contour of the first portion. Independent claims are also included for the following: (1) a method for connecting a connection piece (2) a module comprising a connection piece.