Fittings with coatings, pipeline systems, and use of fittings or pipeline systems

摘要

The present invention has a joint body (4) that houses at least one tube (14, 16) to be coupled, has at least one pressing sleeve (6, 8), and the joint body (4) and the pressing sleeve. (6, 8) have pressure faces (18, 20) assigned to each other, the joint body (4) being directed to the pipe (14, 16) to be connected in the mounted state and the joint body ( 4) having a pressing surface (22) assigned to the peripheral region of the joint body (4) and the pressing sleeves (18, 20) on the pressing sleeve (6, 8) are connected to the pressing sleeve (6, 8). ) Is pressed against the joint body (4) in the axial direction, and the joint body for the inseparable sealing pipe connecting portion is formed so that the peripheral region of the joint body (4) is radially narrowed. The invention provides that at least one of the pressing surfaces (18, 20, 22) is provided with a coating (26), said coating (26) being a pressing sleeve (6, 8) and / or a coupling body (4). It is distinguished in that it is made of a softer material than the above materials. [Selection] Figure 1