Second-Stage Demand Valve
AssemblyDelivers air to the mask only when the wearer inhales, holding a slight positive pressure. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Second-Stage Demand Valve
7 top-level lines as of r149526| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Demand Valve Body | scba-demand-valve-body | 1× | 1 | · | part |
| 2 | Demand Diaphragm | scba-demand-diaphragm | 1× | 1 | · | part |
| 3 | Coil Spring | coil-spring | 1× | 1 | · | part |
| 4 | Bypass / Purge Valve | scba-bypass-valve | 1× | 1 | · | part |
| 5 | Demand Valve Cover | scba-demand-cover | 1× | 1 | · | part |
| 6 | Mask Coupling | scba-mask-coupling | 1× | 1 | · | part |
| 7 | O-Ring Set | oring-set | 1× | 1 | · | part |