The Disk,valve, cataloged under National Stock Number 4820-01-103-9057, 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7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-103-9057 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Shank Diameter | 0.195 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 0.500 INCHES NOMINAL IN |
| Style Designator | POPPET |
| Tip Diameter | 0.277 INCHES NOMINAL IN |
| Seat Angle | 45.0 DEGREES NOMINAL |
| Under Flange Height | 0.375 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 183227-36 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 183227-0036 | 3/2 Design control — primary reference U.S. Government activity |
| 280566 PART 183227-36 | 5/9 Secondary reference U.S. Government activity |
| 280566PART183227-0036 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-103-9057 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-103-9057: Shank Diameter: 0.195 INCHES NOMINAL IN; Flange Seat to Disk End Height: 0.500 INCHES NOMINAL IN; Overall Height: 0.967 INCHES NOMINAL IN; Style Designator: POPPET. 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.