Spiral Casing
AssemblyThe shrinking volute that wraps the runner and feeds water evenly to it from all sides. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Spiral Casing
4 top-level lines as of r69290| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Volute Shell | francis-turbine-volute-shell | 1× | 1 | · | part |
| 2 | Stay Ring | francis-turbine-stay-ring | 1× | 1 | · | part |
| 3 | Stay Vane | francis-turbine-stay-vane | 20× | 20 | · | part |
| 4 | Inlet Flange | francis-turbine-inlet-flange | 1× | 1 | · | part |