The Seat,valve, cataloged under National Stock Number 4820-01-161-6472, 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 5 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-161-6472 |
| Primary Part Number | 109382 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| Status | ACTIVE |
| Body Outside Diameter | 6.562 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 6.125 INCHES MINIMUM AND 6.126 INCHES MAXIMUM IN |
| Material | STEEL SEAT |
| 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 |
|---|---|
| 109382 PRIMARY | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| 056421 ITEM 18 | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| Reference | Meaning |
|---|---|
| 056421 | D/9 Drawing number reference only William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
NSN 4820-01-161-6472 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 4820-01-161-6472 has 2 manufacturer part numbers on file: 109382 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 056421 ITEM 18 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-162-4061, 6685-01-486-5854. Verify interchangeability with system specifications before substitution.
Key specifications for 109382: Overall Height: 0.826 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN; Body Outside Diameter: 6.562 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 6.125 INCHES MINIMUM AND 6.126 INCHES MAXIMUM IN. 5 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.