Abstract: A vent valve comprises a valve housing defining a vent port and a valve member mounted within the housing so as to define a fluid system chamber and an activation chamber with the housing. The valve member is biased towards a closed position, in which fluid communication between the fluid system chamber and the vent port is prevented, by fluid pressure within the fluid system chamber acting on the valve member. The valve member is biased towards an open position, in which there is fluid communication between the fluid system chamber and the vent port, by fluid pressure within the activation chamber acting on the valve member. The vent valve further comprises a pressure limiting arrangement associated with the activation chamber to limit pressure therein to a predetermined pressure value.

Abstract: A vent valve comprises a valve housing defining a vent port and a valve member mounted within the housing so as to define a fluid system chamber and an activation chamber with the housing. The valve member is biased towards a closed position, in which fluid communication between the fluid system chamber and the vent port is prevented, by fluid pressure within the fluid system chamber acting on the valve member. The valve member is biased towards an open position, in which there is fluid communication between the fluid system chamber and the vent port, by fluid pressure within the activation chamber acting on the valve member. The vent valve further comprises a pressure limiting arrangement associated with the activation chamber to limit pressure therein to a predetermined pressure value.

Abstract: A gas turbine exhaust strut installed in an exhaust case of a gas turbine is disclosed which includes a trailing portion configured with an inner surface for mounting to an inner annular member of the exhaust case and an outer surface for mounting to an outer annular member of the exhaust case, a block attached to the trailing portion, an angled piece attached to the block and configured with a surface on a pressure side of the strut angled with respect to a surface of the trailing portion on the pressure side of the strut, and a transition piece attached to the block and configured with a surface on the pressure side of the strut for smoothing the transition between the height of the block on the pressure side of the strut and the height of the trailing portion on the pressure side of the strut. A method of refurbishing an exhaust strut installed in an exhaust case of gas turbine while retaining at least a portion of the strut in the exhaust case is also disclosed.

Abstract: A gas turbine exhaust strut installed in an exhaust case of a gas turbine is disclosed which includes a trailing portion configured with an inner surface for mounting to an inner annular member of the exhaust case and an outer surface for mounting to an outer annular member of the exhaust case, a block attached to the trailing portion, an angled piece attached to the block and configured with a surface on a pressure side of the strut angled with respect to a surface of the trailing portion on the pressure side of the strut, and a transition piece attached to the block and configured with a surface on the pressure side of the strut for smoothing the transition between the height of the block on the pressure side of the strut and the height of the trailing portion on the pressure side of the strut. A method of refurbishing an exhaust strut installed in an exhaust case of gas turbine while retaining at least a portion of the strut in the exhaust case is also disclosed.