The Disk,valve, cataloged under National Stock Number 4820-01-239-9231, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-239-9231 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Pressure Rating | 600.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Taper Minor Diameter | 3.000 INCHES NOMINAL IN |
| Style Designator | SOLID WEDGE |
| Taper Major Diameter | 4.210 INCHES NOMINAL IN |
| Seat Angle | 15.0 DEGREES NOMINAL |
| Taper Length | 6.937 INCHES NOMINAL IN |
| Media for Which Designed | OIL OR WATER |
| 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 |
|---|---|
| 2464-5A PIECE 3 | 5/2 Secondary reference U.S. Government activity |
| 2464-5-3 | 3/2 Design control — primary reference U.S. Government activity |
| 2464-5A | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-239-9231 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-239-9231: Overall Height: 9.374 INCHES NOMINAL IN; Pressure Rating: 600.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Taper Minor Diameter: 3.000 INCHES NOMINAL IN; Style Designator: SOLID WEDGE. 8 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.