The Valve,safety Relief, cataloged under National Stock Number 4820-01-476-3911, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dante Valve Company. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-476-3911 |
| Primary Part Number | D3400 ASSY BBSAA04SDD |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dante Valve Company |
| 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 |
|---|---|
| BBSAA04SDD | Dante Valve Company (USA) |
| D3400 ASSY BBSAA04SDD PRIMARY | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| BBSAA04SDD | 5/9 Secondary reference Danco Valve Company |
| D3400 ASSY BBSAA04SDD | 3/9 Design control — primary reference Danco Valve Company |
NSN 4820-01-476-3911 is a Valve,safety Relief, manufactured by Dante Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-476-3911 has 2 manufacturer part numbers on file: BBSAA04SDD (Dante Valve Company), D3400 ASSY BBSAA04SDD (Dante Valve Company).
Key specifications for D3400 ASSY BBSAA04SDD: End Item Identification: VALVE PRIMING RELIEF. 0 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.