The Stem,fluid Valve, cataloged under National Stock Number 4820-01-476-8301, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-476-8301 |
| Primary Part Number | B4022M |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Valve Type for Which Designed | RELIEF |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Valve Size for Which Designed | 4.000 INCHES IN |
| 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 |
|---|---|
| B4022M PRIMARY | Dante Valve Company (USA) |
| D4000FF ITEM 26 P/N B5022-M PRIMARY | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| B4022-M | 5/9 Secondary reference Danco Valve Company |
| D4000FF ITEM 26 P/N B5022-M | 5/9 Secondary reference Danco Valve Company |
NSN 4820-01-476-8301 is a Stem,fluid Valve, manufactured by Dante Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-476-8301 has 2 manufacturer part numbers on file: B4022M (Dante Valve Company), D4000FF ITEM 26 P/N B5022-M (Dante Valve Company).
Key specifications for B4022M: Valve Type for Which Designed: RELIEF; Stem Actuating End Type: THREADED EXTERNALLY; Valve Size for Which Designed: 4.000 INCHES IN; Special Features: 45T 75 PSI FLGE. 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.