| 摘要 |
<p>The housing has a ring (21) arranged concentrically with a cylindrical section (20), where the ring and the cylindrical section are connected with each other by a weld seam (30). The ring is formed of a harder material e.g. stainless steel, than a remaining of the housing. The ring includes a knife edge (23) that is supported against a surface and that extends circumferentially along the surface, surrounding a through-opening, where a knife-edge supporting surface forms a part of a flange surface (26). The knife edge is pressed into a metallic sealing ring (35) upon connection of flanges.</p> |
