The Valve,special, cataloged under National Stock Number 1720-00-991-0891, is classified within Federal Supply Class 1720 (Aircraft Launching Equipment) of the Aircraft Launch, Landing, and Ground Handling Equipment group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1720-00-991-0891 |
| Item Name | Valve,special |
| FSC / FSG | 1720 / 17 — Aircraft Launching Equipment |
| Status | ACTIVE |
| 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 |
|---|---|
| 408362-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1720-00-991-0891 is a Valve,special, classified under FSC 1720, Aircraft Launching Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-681-9236. Verify interchangeability with system specifications before substitution.
Key specifications for 1720-00-991-0891: End Item Identification: CATAPULTS C-7,C-11,C-13. 0 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 1720-00-991-0891 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.