Thermal head for expansion valves has a chamber partly limited by a metal side and impervious to substances to be filled with a gas sensitive to temperatures

摘要

A chamber (39) is partly limited by a metal side (41), in which there is feed opening (42) with an upper feed opening edge. A closing body (44) fits in a press fit in the feed opening. The outer diameter of the closing body attaches to an inner wall of the feed opening and is larger in proportion to the inner diameter of the inner wall. A section of the closing head fits close to the inner wall.