The Retainer,disk,valve, cataloged under National Stock Number 4820-01-370-1530, 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 3 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-370-1530 |
| Primary Part Number | 211055108 |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outside Diameter | 4.489 INCHES NOMINAL IN |
| Valve Size for Which Designed | 2.500 INCHES IN |
| Valve Design Control Activity | 53711 |
| 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 |
|---|---|
| 211055108 PRIMARY | Naval Sea Systems Command (USA) |
| 6408779 PC 16 | Naval Sea Systems Command (USA) |
| DF330636 PC 16 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 211094286 | Naval Sea Systems Command (USA) |
| 801-6408779 PC 16 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 211092040 | 5/9 Secondary reference Naval Sea Systems Command |
| 801-6408779-16 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4820-01-370-1530 is a Retainer,disk,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-370-1530 has 5 manufacturer part numbers on file: 211055108 (Naval Sea Systems Command), 6408779 PC 16 (Naval Sea Systems Command), DF330636 PC 16 (Huntington Ingalls Inc Div Newport News Shipbuilding), 211094286 (Naval Sea Systems Command), 801-6408779 PC 16 (Naval Sea Systems Command).
Key specifications for 211055108: Outside Diameter: 4.489 INCHES NOMINAL IN; Valve Size for Which Designed: 2.500 INCHES IN; Valve Design Control Activity: 53711; End Item Identification: VALVE B X CHECK. 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.