The Seat,valve, cataloged under National Stock Number 4820-01-478-7759, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-478-7759 |
| Primary Part Number | 845-7108467 ITEM 13 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| 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 |
|---|---|
| 845-7108467 ITEM 13 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2640-801X1 PC 13 | 3/2 Design control — primary reference U.S. Government activity |
| 2643-857-10 ITEM 13 | 5/2 Secondary reference U.S. Government activity |
| 2640-801X01 PC 13 | 5/9 Secondary reference U.S. Government activity |
| 845-7108467 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-478-7759 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-478-7759 has 1 manufacturer part number on file: 845-7108467 ITEM 13 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 3120-01-481-8617, 3120-01-481-8622, 5315-01-710-4980. Verify interchangeability with system specifications before substitution.
Key specifications for 845-7108467 ITEM 13: Special Features: 4.480 X 3.062 X 0.562THK; End Item Identification: VALVE ASSEMBLY BALL HULL & BACKUP FULL PORT 3 INCH 0-700 PSI IN. 0 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.