The Valve,flow Control, cataloged under National Stock Number 4820-01-441-6773, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kalmar Solutions Ab. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,flow Control |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Kalmar Solutions Ab (CAGE A184N) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-441-6773 |
| Primary Part Number | 1877981-801 |
| Item Name | Valve,flow Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kalmar Solutions Ab |
| Status | ACTIVE |
| 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 |
|---|---|
| 1877981-801 PRIMARY | Kalmar Solutions Ab (SWE) |
| Reference | Meaning |
|---|---|
| 1877981-801 | 3/9 Design control — primary reference Cargotec Sweden Ab - Macgregor Cranes |
| 1877981 | D/9 Drawing number reference only Cargotec Sweden Ab - Macgregor Cranes |
| 1877804-801 ITEM NO. 001 | 5/1 Secondary reference Kalmar Solutions Ab |
| 1877804-801 ITEM NO. 001 | 5/9 Secondary reference Cargotec Sweden Ab - Macgregor Cranes |
NSN 4820-01-441-6773 is a Valve,flow Control, manufactured by Kalmar Solutions Ab, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-441-6773 has 1 manufacturer part number on file: 1877981-801 (Kalmar Solutions Ab).
1 possible match (shared part number, not a government interchangeability claim): 5675-01-476-5153. Verify interchangeability with system specifications before substitution.
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.