The Valve and Pump Assembly, cataloged under National Stock Number 1650-00-592-8473, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-592-8473 |
| Item Name | Valve and Pump Assembly |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Status | ACTIVE |
| FSC Application Data | CONSTANT SPEED DRIVE,HYDRAULIC |
| General Characteristics Item Description | MAIN COMPONENTS 1 EA CIRCULATING VALVE PART NO. 681854 FSCM 99167 AND 1 EA PUMP PART NO. 665819 FSCM 99167 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 681627 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1650-00-592-8473 is a Valve and Pump Assembly, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
Key specifications for 1650-00-592-8473: FSC Application Data: CONSTANT SPEED DRIVE,HYDRAULIC; General Characteristics Item Description: MAIN COMPONENTS 1 EA CIRCULATING VALVE PART NO. 681854 FSCM 99167 AND 1 EA PUMP PART NO. 665819 FSCM 99167; End Item Identification: P/N 633320 FSCM 99167. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1650-00-592-8473 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.