Patent ID: 6186476
Filing Date: 2001-02-13
Classification: F16K

Abstract:
A shut-off valve (1) for pipelines (2) and/or for tanks that hold liquids, said valve comprising:a valve housing (3) composed of two parts and having a passage opening (4);a spherical closure element (5) movably installed in said valve housing and having a first passage opening (4'); andtwo half-shell shaped sealing shells (6, 7) installed in said valve housing and surrounding said spherical closure element, said sealing shells forming a second passage opening (4"") that corresponds to the first passage opening (4') of the closure element (5),wherein the sealing shells (6, 7) consist of a material which is softer or more elastic than the material of the closure element (5), each of the sealing shells has a flange (9) and an insert that is configured as a support element and that extends into the area of the flange (9) of the sealing shell, and the inserts project from the sealing shells (6, 7) and form a flange part (13, 13') that is associated with the flange (9).