The Seat,valve, cataloged under National Stock Number 4820-01-021-9301, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is William Powell Company, the Dba Powell Valve Div the Starflo Corporation. Government technical data includes 13 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 | 4820-01-021-9301 |
| Primary Part Number | F62413 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.200 INCHES NOMINAL IN |
| Flange Diameter | 0.750 INCHES NOMINAL IN |
| Thread Length | 0.225 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | THREADED FLANGED |
| Taper Major Diameter | 0.750 INCHES NOMINAL IN |
| Body Inside Diameter | 0.150 INCHES NOMINAL IN |
| Nominal Thread Size | 0.625 INCHES SINGLE THREADED PORTION IN |
| Taper Length | 0.422 INCHES NOMINAL IN |
| Under Flange Height | 0.225 INCHES NOMINAL IN |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Material | SILICON ALLOY OVERALL |
| Thread Series Designator | UNEF SINGLE THREADED PORTION |
| 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 |
|---|---|
| F62413 PRIMARY | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
NSN 4820-01-021-9301 is a Seat,valve, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-021-9301 has 1 manufacturer part number on file: F62413 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).
Key specifications for F62413: Flange Seat to Disk End Height: 0.200 INCHES NOMINAL IN; Flange Diameter: 0.750 INCHES NOMINAL IN; Thread Length: 0.225 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: THREADED FLANGED. 13 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.