The Disk,valve, cataloged under National Stock Number 4820-01-547-2839, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-547-2839 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Outside Diameter | 3.062 INCHES NOMINAL IN |
| Style Designator | SOLID |
| Material Document and Classification | ASTM-B221, ALLOY 5083, 5086 OR 5456, COND H112 ASSN STD SINGLE MATERIAL RESPONSE |
| Nominal Thread Size | 1.750 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1385789 | D/9 Drawing number reference only U.S. Government activity |
| 803-1385789TYG 2IN SH 7 PC NO 6 | 3/2 Design control — primary reference U.S. Government activity |
| 803-1385789TYA 2IN SH 7 PC NO 6 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-547-2839 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4510-01-658-9621, 2040-01-687-6107. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-547-2839: Overall Height: 0.750 INCHES NOMINAL IN; Outside Diameter: 3.062 INCHES NOMINAL IN; Style Designator: SOLID; Material Document and Classification: ASTM-B221, ALLOY 5083, 5086 OR 5456, COND H112 ASSN STD SINGLE MATERIAL RESPONSE. 7 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.