The Seat,valve, cataloged under National Stock Number 4820-01-464-4172, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dante Valve Company. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-464-4172 |
| Primary Part Number | D49-8-08 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING SEAT |
| 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 |
|---|---|
| D4930 REV F ITEM 5 | Dante Valve Company (USA) |
| D49-8-08 PRIMARY | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| D4930 | D/9 Drawing number reference only Danco Valve Company |
| D49-8-08 | 3/9 Design control — primary reference Danco Valve Company |
| D4930 REV F ITEM 5 | 5/9 Secondary reference Danco Valve Company |
NSN 4820-01-464-4172 is a Seat,valve, manufactured by Dante Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-464-4172 has 2 manufacturer part numbers on file: D4930 REV F ITEM 5 (Dante Valve Company), D49-8-08 (Dante Valve Company).
4 possible matches (shared part number, not a government interchangeability claim): 5310-01-472-4838, 4820-01-573-0583, 4820-01-573-0610. Verify interchangeability with system specifications before substitution.
Key specifications for D49-8-08: Special Features: NEXT HIGHER ASSY; VALVE,RELIEF; Material: STEEL CORROSION RESISTING SEAT. 1 specification is 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.