The Seat,valve, cataloged under National Stock Number 4820-00-412-3505, 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 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-412-3505 |
| Primary Part Number | 230-206-050-139-300 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp |
| Status | ACTIVE |
| Body Outside Diameter | 6.500 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 5.000 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 470-206-050-139-300 | Emerson Automation Solutions Final Control Us Lp (USA) |
| 230-206-050-139-300 PRIMARY | Emerson Automation Solutions Final Control Us Lp (USA) |
| Reference | Meaning |
|---|---|
| 4820PL1257494 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 88K139050 | 5/9 Secondary reference California Precision Machine Inc |
| 230-206-050-139-000 | 5/9 Secondary reference Emerson Automation Solutions Final Control Us Lp |
NSN 4820-00-412-3505 is a Seat,valve, manufactured by Emerson Automation Solutions Final Control Us Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-412-3505 has 2 manufacturer part numbers on file: 470-206-050-139-300 (Emerson Automation Solutions Final Control Us Lp), 230-206-050-139-300 (Emerson Automation Solutions Final Control Us Lp).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-373-3122. Verify interchangeability with system specifications before substitution.
Key specifications for 230-206-050-139-300: Overall Height: 2.270 INCHES NOMINAL IN; Body Outside Diameter: 6.500 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 5.000 INCHES NOMINAL IN. 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.