The Disk,valve, cataloged under National Stock Number 4820-01-141-1589, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cooper Cameron Corp Cooper Cameron Valves Div. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-141-1589 |
| Primary Part Number | 7440-003 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Cooper Cameron Corp Cooper Cameron Valves Div |
| Status | ACTIVE |
| Pressure Rating | 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Outside Diameter | 2.285 INCHES NOMINAL IN |
| Style Designator | BUTTERFLY |
| Material Thickness | 0.250 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7440-003 PRIMARY | Cooper Cameron Corp Cooper Cameron Valves Div (USA) |
| 3854 2IN INDEX 3 | Cooper Cameron Corp Cooper Cameron Valves Div (USA) |
NSN 4820-01-141-1589 is a Disk,valve, manufactured by Cooper Cameron Corp Cooper Cameron Valves Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-141-1589 has 2 manufacturer part numbers on file: 7440-003 (Cooper Cameron Corp Cooper Cameron Valves Div), 3854 2IN INDEX 3 (Cooper Cameron Corp Cooper Cameron Valves Div).
Key specifications for 7440-003: Pressure Rating: 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Outside Diameter: 2.285 INCHES NOMINAL IN; Style Designator: BUTTERFLY; Material Thickness: 0.250 INCHES NOMINAL IN. 5 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.