A BYPASS VALVE FOR A STEAM TURBINE BEING PART OF A POWER PLANT AND A REPLACEMENT KIT FOR A STEAM TURBINE BYPASS VALVE

摘要

The invention relates to a bypass valve (10) for a steam turbine with an axially extending valve body (16) having a steam inlet (12) and a steam outlet (14), and a cage (18) with perforations for allowing steam to enter the valve body (16). A plug (28) is reciprocally movable in the interior of the valve body (16). The valve further comprises a detachable, substantially annular valve seat (34), a compression ring (22) arranged so that it rests against an internal lip (24) provided in the valve body (16) and an annular seat gasket (35) made in compressible material. In the assembled state of the bypass valve (10), the compression ring (22) and the seat gasket (35) are axially compressed and the valve seat (34) is rendered immobile between the cylindrical cage (18) and the seat gasket (35). The invention also relates to a replacement kit for a bypass valve.