The Disk,valve, cataloged under National Stock Number 4820-00-994-2046, 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7 specifications, cited from the U.S. Government catalog. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-994-2046 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| FSC Application Data | F100F ACFT FUEL TANKS |
| Pressure Rating | 60.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Special Test Features | MAXIMUM CRACKING PRESSURE: 0.25" FUEL |
| Outside Diameter | 3.309 INCHES NOMINAL IN |
| Supplementary Features | OPERATING PRESSURE: 0 TO 60PSIG,PROOF: 120PSIG,BURST: 180PSIG |
| Media for Which Designed | FUEL, JET |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 4820PL2159859 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| MIL-V-7899 | 5/9 Secondary reference U.S. Government activity |
| MS29521-48 | 2/2 Government specification standardization U.S. Government activity |
| 1111-548398 | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-7899 | 4/1 Identification reference U.S. Government activity |
| 6-4800 | 5/9 Secondary reference U.S. Government activity |
| 6-4801 | 5/9 Secondary reference U.S. Government activity |
| 7M640-48 | 5/1 Secondary reference The Boeing Company Div Defense |
| 48C112-3-1 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-00-994-2046 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1420-01-223-2680. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-994-2046: Overall Height: 0.307 INCHES MAXIMUM IN; FSC Application Data: F100F ACFT FUEL TANKS; Pressure Rating: 60.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Special Test Features: MAXIMUM CRACKING PRESSURE: 0.25" FUEL. 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.
NSN 4820-00-994-2046 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.