The Seat,valve, cataloged under National Stock Number 4820-01-421-4645, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 2 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-421-4645 |
| Primary Part Number | 4-F0064C-02TY-01 PIECE 9 (8IN) |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Material Document and Classification | ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material | STEEL 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 |
|---|---|
| 4-F0064C-02TY-01 PIECE 9 (8IN) PRIMARY | Velan Valve Corp. (USA) |
NSN 4820-01-421-4645 is a Seat,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-421-4645 has 1 manufacturer part number on file: 4-F0064C-02TY-01 PIECE 9 (8IN) (Velan Valve Corp.).
Key specifications for 4-F0064C-02TY-01 PIECE 9 (8IN): Material Document and Classification: ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE SEAT; Special Features: WITH STELLITE 6 FACE; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: STEEL SEAT. 2 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.