Tap extension fitting for use with wall connection fitting for drinking water pipe, has wall connection region comprising sealing region on side of external thread, where external thread side facing away from fitting connection region

摘要

The fitting (24) has an external thread (40) arranged in a wall connection region (36) and formed in a cylindrical shape. The wall connection region comprises a sealing region (42) on a side of the external thread, where the external thread side facing away from a fitting connection region (38). The sealing region is designed in a cylindrical surface with width of 5 mm, and has a sealant i.e. O-shaped ring (32). An external polygon surface is formed as an anti-rotation outer contour (44) in the extension fitting whose inner cross-section an inner polygonal surface (47) is partially formed. Independent claims are also included for the following: (1) a wall connection fitting comprising a retained arranged in a fitting connection area (2) a system comprising an anti-twist plate unit designed as a sliding sleeve.