The Gear Operator,valve, cataloged under National Stock Number 4820-01-503-6522, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-503-6522 |
| Primary Part Number | 594-7066620-SA-002-OPR |
| Item Name | Gear Operator,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Valve Type for Which Designed | VENT |
| Features Provided | HANDWHEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 594-7066620-SA-002-OPR PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H525-7205-SA-002-OPR | 5/2 Secondary reference U.S. Government activity |
| H525-7205 | D/9 Drawing number reference only U.S. Government activity |
| 7066620 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-503-6522 is a Gear Operator,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-503-6522 has 1 manufacturer part number on file: 594-7066620-SA-002-OPR (Naval Sea Systems Command).
Key specifications for 594-7066620-SA-002-OPR: Valve Type for Which Designed: VENT; Features Provided: HANDWHEEL; Part Name Assigned by Controlling Agency: MANUAL REMOTE OPERATOR SA-022; End Item Identification: LOS ANGELES CLASS SSN. 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 4820-01-503-6522 has DEMIL Code D. 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.