VALVE DEVICE AND A STEAM TURBINE SYSTEM INCORPORATING SAID VALVE DEVICE

摘要

The present invention provides a valve device incorporating two valves, for example a stop valve and a control valve, housed in the same side of a common casing. The proposed valve device (10) comprises an inlet port (14) and an outlet port (16) connected by a fluid flow channel (18). The valve device (10) further includes a first valve and a second valve housed in a common casing (13). The first valve comprises a first valve head (22) mounted on an annular-shaped first spindle (20). The second valve comprises a second valve head (26) mounted on a second spindle (24), said second spindle (24) extending concentrically and slidably through said annular-shaped first spindle (20). The first and second valves are displaceable along a common axis (28) and operable to influence fluid flow between said inlet port (14) and said outlet port (16) through said flow channel (18).