The Valve,vacuum Breaking, cataloged under National Stock Number 4820-01-436-2882, 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 5 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 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 | 4820-01-436-2882 |
| Primary Part Number | BMC-3479CCN |
| Item Name | Valve,vacuum Breaking |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bidoro Mfg Co Po Box 103 Huntington Sta Ny 11746 |
| Status | ACTIVE |
| Flow Control Device | PISTON, FREE TYPE |
| End Connection Quantity | 2 |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | RUBBER CHLOROPRENE CLASS CR SEAT |
| 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-3479CCN PRIMARY | Bidoro Mfg Co Po Box 103 Huntington Sta Ny 11746 (USA) |
NSN 4820-01-436-2882 is a Valve,vacuum Breaking, manufactured by Bidoro Mfg Co Po Box 103 Huntington Sta Ny 11746, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-436-2882 has 1 manufacturer part number on file: BMC-3479CCN (Bidoro Mfg Co Po Box 103 Huntington Sta Ny 11746).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-451-9162. Verify interchangeability with system specifications before substitution.
Key specifications for BMC-3479CCN: Flow Control Device: PISTON, FREE TYPE; End Connection Quantity: 2; Special Features: VALVE SIZE 1.000 IN.;ANGLE STYLE FLOW. IN; Material: COPPER ALLOY BODY. 5 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.