Upper Barrel & Operating Head
AssemblyTop section housing the operating mechanism: the bonnet caps the barrel and carries the operating nut, stem bearing, oil reservoir and hold-down nut. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Upper Barrel & Operating Head
9 top-level lines as of r63312| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Bonnet / Top Cap | fire-hydrant-bonnet | 1× | 1 | · | part |
| 2 | Weather Cap | fire-hydrant-weather-cap | 1× | 1 | · | part |
| 3 | Operating Nut | fire-hydrant-operating-nut | 1× | 1 | · | part |
| 4 | Upper Operating Stem | fire-hydrant-operating-stem-upper | 1× | 1 | · | part |
| 5 | Thrust Collar / Bearing | fire-hydrant-thrust-collar | 1× | 1 | · | part |
| 6 | Oil Reservoir | fire-hydrant-oil-reservoir | 1× | 1 | · | part |
| 7 | Hold-Down Nut | fire-hydrant-hold-down-nut | 1× | 1 | · | part |
| 8 | O-Ring Set | oring-set | 1× | 1 | · | part |
| 9 | Fastener Set | fastener-set | 1× | 1 | · | part |