The Gear Operator,valve, cataloged under National Stock Number 4820-01-522-6009, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-522-6009 |
| Item Name | Gear Operator,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Gear Type | WORM |
| Gear Ratio | 30 TO 1 |
| 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 |
|---|---|
| D420-4-8-396 | D/9 Drawing number reference only Emerson Automation Solutions Final Control Us Lp |
| 420-4 | D/9 Drawing number reference only Emerson Automation Solutions Final Control Us Lp |
| 218040185-OPR | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-522-6009 is a Gear Operator,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-522-6009: Gear Type: WORM; Part Name Assigned by Controlling Agency: HANDWHEEL GEAR OPERATOR AS MODIFIED BY ELECTRIC BOAT.; End Item Identification: SEAWOLF CLASS SSN; Gear Ratio: 30 TO 1. 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 4820-01-522-6009 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.