The Valve,ball, cataloged under National Stock Number 4820-01-446-4082, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dunns Valve Testers Inc. Government technical data includes 1 specification, 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-446-4082 |
| Primary Part Number | 220001 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dunns Valve Testers Inc |
| Status | ACTIVE |
| Media for Which Designed | AIR SINGLE RESPONSE |
| 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 |
|---|---|
| 220001 PRIMARY | Dunns Valve Testers Inc (USA) |
| MODEL 006 ITEM 18 | Dunns Valve Testers Inc (USA) |
NSN 4820-01-446-4082 is a Valve,ball, manufactured by Dunns Valve Testers Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-446-4082 has 2 manufacturer part numbers on file: 220001 (Dunns Valve Testers Inc), MODEL 006 ITEM 18 (Dunns Valve Testers Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5820-01-537-3536, 5305-01-606-4019. Verify interchangeability with system specifications before substitution.
Key specifications for 220001: Media for Which Designed: AIR SINGLE RESPONSE; End Item Identification: NIMITZ CLASS CVN. 1 specification is 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.