The Valve,flow Control, cataloged under National Stock Number 4820-01-420-7889, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ausco Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-420-7889 |
| Primary Part Number | A451-2 |
| Item Name | Valve,flow Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ausco Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A451-2 PRIMARY | Ausco Inc (USA) |
| Reference | Meaning |
|---|---|
| 3871805-105 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 4820-01-420-7889 is a Valve,flow Control, manufactured by Ausco Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-420-7889 has 1 manufacturer part number on file: A451-2 (Ausco Inc).
Key specifications for A451-2: End Item Identification: AIRCRAFT,MCDONNELL DOUGLAS,MODEL C-17A;AIR FORCE WEAPONS SYSTEM CODE,DT,AIRCRAFT,AIRLIFTER C-17A A. 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 4820-01-420-7889 has DEMIL Code Q. 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.