Patent ID: 8899312

Claim:
A plate heat exchanger comprising a plurality of heat exchanger plates provided beside each other to form a plate package having first plate interspaces for a first medium and second plate interspaces for a second medium, wherein the first and second plate interspaces are provided in an alternating order in the plate package, a number of portholes extending through the plate package and forming first inlet and outlet channels arranged to convey the first medium into and out from the first plate interspaces, an insert element, which is provided in one of the portholes for the first medium, and comprises an annular body and an annular flange projecting outwardly from the annular body and provided between two of the heat exchanger plates in the plate package, wherein the annular flange has a first side and an opposite second side, which abut a respective one of the two heat exchanger plates, wherein the first side comprises an annular groove in the proximity of the annular body and at least one radial groove extending from the annular groove to an outer edge of the annular flange.