The Disk,valve, cataloged under National Stock Number 4820-00-175-7785, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is General Electric Company. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Disk,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | General Electric Company (CAGE 01289) |
| Parameter | Value |
|---|---|
| NSN | 4820-00-175-7785 |
| Primary Part Number | 6658521-2 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 6658521-2 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 6658521-2 | 5/2 Secondary reference U.S. Government activity |
| WW5599124SH1PC3 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| W5599149PC68 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| 6658521-2 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| WW5599124SH4PC3 | 5/9 Secondary reference General Electric Company |
| WW5599124SH1PC3 | 5/9 Secondary reference General Electric Company |
| 6658521-2 | 3/9 Design control — primary reference General Electric Co Naval and Drive Turbine Systems Dept |
| WW5599124SH4PC3 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| W5599149PC68 | 5/9 Secondary reference General Electric Company |
| 6658521-2 | 5/9 Secondary reference General Electric Company |
NSN 4820-00-175-7785 is a Disk,valve, manufactured by General Electric Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-175-7785 has 1 manufacturer part number on file: 6658521-2 (General Electric Company).
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.