The Retainer,disk,valve, cataloged under National Stock Number 4820-01-446-3759, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dante Valve Company. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-446-3759 |
| Primary Part Number | BS3426 |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Valve Model Number for Which Designed | D60-FF |
| Valve Size for Which Designed | 0.500 INCHES IN |
| Valve Design Control Activity | 65079 |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| BS3426 PRIMARY | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| D60-000-1/2 ITEM 23 | 5/9 Secondary reference Danco Valve Company |
| D60-000-1/2 | D/9 Drawing number reference only Danco Valve Company |
| DXE62-.5-000 ITEM 7 | C/1 Advisory reference — outside the item-of-supply concept Danco Valve Company |
| BS3426 | 5/9 Secondary reference Danco Valve Company |
| B3426C | 5/9 Secondary reference Danco Valve Company |
NSN 4820-01-446-3759 is a Retainer,disk,valve, manufactured by Dante Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-446-3759 has 1 manufacturer part number on file: BS3426 (Dante Valve Company).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-446-3761. Verify interchangeability with system specifications before substitution.
Key specifications for BS3426: Valve Model Number for Which Designed: D60-FF; Valve Size for Which Designed: 0.500 INCHES IN; Valve Design Control Activity: 65079; End Item Identification: WHIDBEY ISLAND CLASS LSD. 4 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.