Connector with pressure equalization

A connector for connecting at least two lines for containing a liquid medium, wherein said connector has a first connection end for connecting to a first receptor module and a second connection end for connecting to a second receptor module, wherein the liquid medium can flow through said connector between said first and second connection ends wherein said connector has a pressure equalization chamber between said two connection ends, and includes an interior wall, wherein a compressible insert is disposed in said pressure equalization chamber, wherein said compressible insert lies in part against an interior wall of said pressure equalization chamber, wherein a least one longitudinal channel is defined between said interior wall of said pressure equalization chamber and said compressible insert to form a fluid communication between said first and said second connection ends, and wherein, said compressible insert can be compacted within said pressure equalization chamber in response to a volume expansion of the liquid medium due to temperature conditions and, wherein said interior wall of said pressure equalization chamber includes at least one longitudinal channel for said fluid communication between said first and said second connection ends between said interior wall of said pressure equalization chamber and said compressible insert.