The Disk,valve, cataloged under National Stock Number 4820-01-433-2607, 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 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-433-2607 |
| Primary Part Number | 211094289 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.286 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Outside Diameter | 0.402 INCHES MINIMUM IN |
| Style Designator | SWING CHECK |
| Under Flange Height | 0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM IN |
| Media for Which Designed | WATER, SALT |
| Material | TITANIUM 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 |
|---|---|
| 211094289 PRIMARY | Naval Sea Systems Command (USA) |
| 8016408779 FN 46 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| DF330636 FN 46 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 211066687 | 5/9 Secondary reference Naval Sea Systems Command |
| 6408779 | D/9 Drawing number reference only Naval Sea Systems Command |
| 6408779 FIND 46 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4820-01-433-2607 is a Disk,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-433-2607 has 2 manufacturer part numbers on file: 211094289 (Naval Sea Systems Command), 8016408779 FN 46 (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-444-6247, 4820-01-450-2564, 4820-01-493-4455. Verify interchangeability with system specifications before substitution.
Key specifications for 211094289: Flange Seat to Disk End Height: 0.286 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Outside Diameter: 0.402 INCHES MINIMUM IN; Style Designator: SWING CHECK; Under Flange Height: 0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM IN. 6 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.