The Disk,valve, cataloged under National Stock Number 4820-01-283-3249, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-283-3249 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Pressure Rating | 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Material | IRON |
| 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 |
|---|---|
| F-637-31 2-1/2IN PIECE 22 | 5/9 Secondary reference Nibco Inc |
| T046909 FC | C/1 Advisory reference — outside the item-of-supply concept Nibco Inc Chemtrol Div |
| F-637-31-2-1/2 PIECE 22 | 5/9 Secondary reference Nibco Inc |
| F-637-31-2-1/2-22WEDGE | 5/9 Secondary reference Nibco Inc |
| F-637-31-2 1/2-22WEDGE | 3/9 Design control — primary reference Nibco Inc |
| T046909 FC | 5/9 Secondary reference Nibco Inc |
NSN 4820-01-283-3249 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-283-3249: Pressure Rating: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Special Features: DUCTILE IRON A395; End Item Identification: NIBCO MODEL F-637-31,GATE VALVE; Material: IRON. 2 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.