Stem Assembly
AssemblyTwo-piece stem carrying the disc, with bearings, seals and anti-blowout retention. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Stem Assembly
7 top-level lines as of r20550| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Upper Stem | butterfly-valve-upper-stem | 1× | 1 | · | part |
| 2 | Lower Stem | butterfly-valve-lower-stem | 1× | 1 | · | part |
| 3 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
| 4 | O-Ring Set | oring-set | 2× | 2 | · | part |
| 5 | Retaining Ring | butterfly-valve-retaining-ring | 1× | 1 | · | part |
| 6 | Anti-Blowout Collar | butterfly-valve-anti-blowout-collar | 1× | 1 | · | part |
| 7 | Stem Packing | butterfly-valve-packing | 1× | 1 | · | part |