The Seat,valve, cataloged under National Stock Number 4820-01-282-8507, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Floworks Usa Lp Dba Flotech Div Jacksonville. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-282-8507 |
| Primary Part Number | 21425 14IN ITEM 5 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Floworks Usa Lp Dba Flotech Div Jacksonville |
| Status | ACTIVE |
| Material | COPPER ALLOY 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 |
|---|---|
| 21425 14IN ITEM 5 PRIMARY | Floworks Usa Lp Dba Flotech Div Jacksonville (USA) |
| GAV 1029-B 14IN ITEM 5 | Floworks Usa Lp Dba Flotech Div Jacksonville (USA) |
| Reference | Meaning |
|---|---|
| GAV 1029 | D/9 Drawing number reference only Floworks Usa Lp Dba Flotech Div Jacksonville |
NSN 4820-01-282-8507 is a Seat,valve, manufactured by Floworks Usa Lp Dba Flotech Div Jacksonville, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-282-8507 has 2 manufacturer part numbers on file: 21425 14IN ITEM 5 (Floworks Usa Lp Dba Flotech Div Jacksonville), GAV 1029-B 14IN ITEM 5 (Floworks Usa Lp Dba Flotech Div Jacksonville).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-282-8508. Verify interchangeability with system specifications before substitution.
Key specifications for 21425 14IN ITEM 5: Material: COPPER ALLOY 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.