The Seat,valve, cataloged under National Stock Number 4820-01-304-2839, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-304-2839 |
| Primary Part Number | SW-22141F8M.25IN F-46670 PC14 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Inc |
| Status | ACTIVE |
| Style Designator | PLAIN |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| SW-22141F8M.25IN F-46670 PC14 PRIMARY | Flowserve Inc (USA) |
| Reference | Meaning |
|---|---|
| F-46670 | D/9 Drawing number reference only Flowserve Inc |
NSN 4820-01-304-2839 is a Seat,valve, manufactured by Flowserve Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-304-2839 has 1 manufacturer part number on file: SW-22141F8M.25IN F-46670 PC14 (Flowserve Inc).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-308-5324, 4820-01-308-8286, 4820-01-311-4973. Verify interchangeability with system specifications before substitution.
Key specifications for SW-22141F8M.25IN F-46670 PC14: Style Designator: PLAIN; Special Features: REMOVABLE; Material: STEEL CORROSION RESISTING OVERALL; Seating Surface Shape: FLAT. 3 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.