The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-665-6839, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,calibrated Flow |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-665-6839 |
| Primary Part Number | 7550880-F41 |
| Item Name | Valve,calibrated Flow |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| 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 |
|---|---|
| 7550880-F41 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 218108181 | 5/2 Secondary reference U.S. Government activity |
| 3524SBZ1-16.0 | 3/2 Design control — primary reference U.S. Government activity |
| 10017003 REV 4 / GPM 16.00 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| F659-9001-F41 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-665-6839 is a Valve,calibrated Flow, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-665-6839 has 1 manufacturer part number on file: 7550880-F41 (Naval Sea Systems Command).
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.