The Gear Operator,valve, cataloged under National Stock Number 4820-01-526-9225, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-526-9225 |
| Primary Part Number | 14920526 |
| Item Name | Gear Operator,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Gear Type | WORM |
| Features Provided | INDICATOR GAGE |
| Valve Size for Which Designed | 3.000 INCHES IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6406768 AY 97 | Naval Sea Systems Command (USA) |
| 14920526 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| DN331473B10 AY 97 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| DF331473 AY 97 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 6406768 | 5/9 Secondary reference Naval Sea Systems Command |
| 6406768B10 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-526-9225 is a Gear Operator,valve, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-526-9225 has 4 manufacturer part numbers on file: 6406768 AY 97 (Naval Sea Systems Command), 14920526 (Huntington Ingalls Inc Div Newport News Shipbuilding), DN331473B10 AY 97 (Huntington Ingalls Inc Div Newport News Shipbuilding), DF331473 AY 97 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 14920526: Gear Type: WORM; Features Provided: INDICATOR GAGE; Valve Size for Which Designed: 3.000 INCHES IN; Special Features: THIS WORM GEAR IS A HULL PRENETRATION UNDEX ITEM USED ON A 3" COMBINATION HULL AND BACKUP VALVE; USED WITH REMOTE ACTUATOR. 4 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 4820-01-526-9225 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.