The Disk,valve, cataloged under National Stock Number 4820-01-459-4205, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-459-4205 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Outside Diameter | 42.000 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Inside Diameter | 1.750 INCHES NOMINAL IN |
| Media for Which Designed | WATER, SALT |
| Material | NICKEL 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 |
|---|---|
| 209-45279581 ITEM 1 | 3/2 Design control — primary reference U.S. Government activity |
| 209-4527958ITEM | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 209-45279581 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-459-4205 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-459-4205: Overall Height: 0.938 INCHES NOMINAL IN; Outside Diameter: 42.000 INCHES NOMINAL IN; Style Designator: PLAIN; Inside Diameter: 1.750 INCHES NOMINAL IN. 5 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.