The Disk,valve, cataloged under National Stock Number 4820-01-452-0647, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bidoro Mfg Co Po Box 103 Huntington Sta Ny 11746. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-452-0647 |
| Primary Part Number | BMC-3479S PART 16 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bidoro Mfg Co Po Box 103 Huntington Sta Ny 11746 |
| Status | ACTIVE |
| Style Designator | POPPET |
| Material | COPPER 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 |
|---|---|
| BMC-3479S PART 16 PRIMARY | Bidoro Mfg Co Po Box 103 Huntington Sta Ny 11746 (USA) |
| Reference | Meaning |
|---|---|
| BMC-3479S | D/9 Drawing number reference only Bidoro Mfg Co Po Box 103 Huntington Sta Ny 11746 |
NSN 4820-01-452-0647 is a Disk,valve, manufactured by Bidoro Mfg Co Po Box 103 Huntington Sta Ny 11746, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-452-0647 has 1 manufacturer part number on file: BMC-3479S PART 16 (Bidoro Mfg Co Po Box 103 Huntington Sta Ny 11746).
Key specifications for BMC-3479S PART 16: Style Designator: POPPET; Special Features: VALVE SIZE 1/2 IN. IN; End Item Identification: SEAWOLF CLASS SSN; Material: COPPER ALLOY. 2 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.