The Disk,valve, cataloged under National Stock Number 4820-01-250-1978, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Floworks Usa Lp Dba Flotech Div Jacksonville. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-250-1978 |
| Primary Part Number | N1043M-3 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Floworks Usa Lp Dba Flotech Div Jacksonville |
| Status | ACTIVE |
| Pressure Rating | 100.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Taper Minor Diameter | 1.446 INCHES NOMINAL IN |
| Style Designator | SOLID WEDGE |
| Taper Major Diameter | 2.285 INCHES NOMINAL IN |
| Seat Angle | 0.5 RADIANS NOMINAL |
| Taper Length | 4.812 INCHES NOMINAL IN |
| Media for Which Designed | GAS OR OIL |
| 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 |
|---|---|
| 1120 PART NO. N1043M-3 | Floworks Usa Lp Dba Flotech Div Jacksonville (USA) |
| N1043M-3 PRIMARY | Floworks Usa Lp Dba Flotech Div Jacksonville (USA) |
| Reference | Meaning |
|---|---|
| 1120 | D/9 Drawing number reference only Floworks Usa Lp Dba Flotech Div Jacksonville |
NSN 4820-01-250-1978 is a Disk,valve, manufactured by Floworks Usa Lp Dba Flotech Div Jacksonville, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-250-1978 has 2 manufacturer part numbers on file: 1120 PART NO. N1043M-3 (Floworks Usa Lp Dba Flotech Div Jacksonville), N1043M-3 (Floworks Usa Lp Dba Flotech Div Jacksonville).
Key specifications for N1043M-3: Overall Height: 5.250 INCHES NOMINAL IN; Pressure Rating: 100.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Taper Minor Diameter: 1.446 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.