The Seat,valve, cataloged under National Stock Number 4820-01-305-5683, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Atlas Incinerators A/s. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Seat,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Atlas Incinerators A/s (CAGE R2394) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-305-5683 |
| Primary Part Number | 2244-1-7 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Atlas Incinerators A/s |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 2244-1-7 | Atlas Incinerators A/s (DNK) |
| Reference | Meaning |
|---|---|
| 2244-1-7 | 3/9 Design control — primary reference Young and Cunningham America Inc a Joint Venture |
| 000991699-000-005 | 5/9 Secondary reference Waukesha Bearings Corporation |
NSN 4820-01-305-5683 is a Seat,valve, manufactured by Atlas Incinerators A/s, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-305-5683 has 1 manufacturer part number on file: 2244-1-7 (Atlas Incinerators A/s).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-531-3342. Verify interchangeability with system specifications before substitution.
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.