The Disk,valve, cataloged under National Stock Number 4820-01-421-0018, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nihon Seiki Co. Ltd. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-421-0018 |
| Primary Part Number | EY-3069U PC-4 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Nihon Seiki Co. Ltd |
| Status | ACTIVE |
| Style Designator | PLAIN |
| Media for Which Designed | AIR |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EY-3069U PC-4 | Nihon Seiki Co. Ltd (JPN) |
| Reference | Meaning |
|---|---|
| EY-3069U PC-4 | 3/9 Design control — primary reference Fuji Trading America Inc |
| EY-3069U PC-4 | 5/9 Secondary reference Fuji Trading (america) Inc. |
| EY-3069U PC-4 | 5/9 Secondary reference Nihon Seiki Co. Ltd |
NSN 4820-01-421-0018 is a Disk,valve, manufactured by Nihon Seiki Co. Ltd, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-421-0018 has 1 manufacturer part number on file: EY-3069U PC-4 (Nihon Seiki Co. Ltd).
Key specifications for EY-3069U PC-4: Style Designator: PLAIN; Media for Which Designed: AIR; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: COPPER ALLOY. 3 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.
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.