The Seat,valve, cataloged under National Stock Number 4820-01-232-2433, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fluidyne Corporation Dba Fluidyne Corp. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Seat,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Fluidyne Corporation Dba Fluidyne Corp (CAGE 9Y957); The Walworth Company (CAGE 63686) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-232-2433 |
| Primary Part Number | S4824-F-3218354 PC3 8IN |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fluidyne Corporation Dba Fluidyne Corp |
| 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 |
|---|---|
| S4824-F-3218354 PC3 8IN PRIMARY | Fluidyne Corporation Dba Fluidyne Corp (USA) |
| N-10721 PIECE 3 | The Walworth Company (USA) |
| 9557-110-1-Y-9 PRIMARY | The Walworth Company (USA) |
| Reference | Meaning |
|---|---|
| S4824 3,218,354 | D/9 Drawing number reference only U.S. Government activity |
| N-10721 | D/9 Drawing number reference only The Walworth Company |
| S4824 3,218,354 PIECE 3 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-232-2433 is a Seat,valve, manufactured by Fluidyne Corporation Dba Fluidyne Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-232-2433 has 3 manufacturer part numbers on file: S4824-F-3218354 PC3 8IN (Fluidyne Corporation Dba Fluidyne Corp), N-10721 PIECE 3 (The Walworth Company), 9557-110-1-Y-9 (The Walworth Company).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-232-8457. Verify interchangeability with system specifications before substitution.
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.