The Disk,valve, cataloged under National Stock Number 4820-01-161-6672, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-161-6672 |
| Primary Part Number | 39-2-1 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp |
| Status | ACTIVE |
| Pressure Rating | 15.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Outside Diameter | 24.000 INCHES NOMINAL IN |
| Style Designator | BUTTERFLY |
| Material | ALUMINUM |
| 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 |
|---|---|
| 39-2-1 PRIMARY | Emerson Automation Solutions Final Control Us Lp (USA) |
| Reference | Meaning |
|---|---|
| 39-2-1 ITEM 2VALVE 11-2-1R24.0 | 5/9 Secondary reference Emerson Automation Solutions Final Control Us Lp |
| 761-204-240-640-000 | 5/9 Secondary reference Emerson Automation Solutions Final Control Us Lp |
NSN 4820-01-161-6672 is a Disk,valve, manufactured by Emerson Automation Solutions Final Control Us Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-161-6672 has 1 manufacturer part number on file: 39-2-1 (Emerson Automation Solutions Final Control Us Lp).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-168-1978, 6520-01-180-3234. Verify interchangeability with system specifications before substitution.
Key specifications for 39-2-1: Pressure Rating: 15.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Outside Diameter: 24.000 INCHES NOMINAL IN; Style Designator: BUTTERFLY; Material: ALUMINUM. 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.