The Disk,valve, cataloged under National Stock Number 4820-00-084-0441, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-084-0441 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Outside Diameter | 1.720 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Inside Diameter | 0.824 INCHES NOMINAL IN |
| Material | STEEL |
| 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 |
|---|---|
| K213173 | 5/9 Secondary reference Davey Compressor Co Div of Keco Industries Inc |
| K213173 | 3/9 Design control — primary reference Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. |
| K213173 | C/1 Advisory reference — outside the item-of-supply concept Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
| 213173 | 5/9 Secondary reference Davey Compressor Co Div of Keco Industries Inc |
| 213173 | 5/9 Secondary reference Kidde-Fenwal, Llc |
NSN 4820-00-084-0441 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 1680-00-470-5239, 5360-00-498-7428, 3020-00-853-8572. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-084-0441: Overall Height: 0.026 INCHES NOMINAL IN; Outside Diameter: 1.720 INCHES NOMINAL IN; Style Designator: PLAIN; Inside Diameter: 0.824 INCHES NOMINAL IN. 4 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.