The Valve,stop-Check, cataloged under National Stock Number 4820-01-640-7783, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-640-7783 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Nominal Length | 3.25 INCHES ALL ENDS IN |
| Maximum Operating Temp | 212.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Width | 2.25 INCHES ALL ENDS IN |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 105-003NL | 3/9 Design control — primary reference Home Depot Usa Inc Dba Home Depot |
NSN 4820-01-640-7783 is a Valve,stop-Check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-640-7783: Nominal Length: 3.25 INCHES ALL ENDS IN; Maximum Operating Temp: 212.0 FAHRENHEIT SINGLE RESPONSE DEGF; Special Features: VALVE OUTLET DIAMETER: 0.5 INCHES; PIPE MATERIAL: COPPER; CAST IRON HANDLE; BRASS BODY; METRIC DIMENSION: 12.7MM MM; Nominal Width: 2.25 INCHES ALL ENDS IN. 4 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.