Valve arrangement to control e.g. quick-closing turbine valve unit has pressurized control line to control three switching valve groups

摘要

The valve arrangement has a control line (44) pressurized by fluid from the supply, controlling three switching valve groups, each including two switching valves (60, 64) and one of the input switching valves (16, 18, 20). Between each group and the control line, there is a control valve (46, 48, 50) to handle the switching of all these valves.