The Seat,valve, cataloged under National Stock Number 4820-01-643-7250, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is B N L Industries Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Seat,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | B N L Industries Inc (CAGE 0AZ22) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-643-7250 |
| Primary Part Number | GBV-F3-60-0003-05 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | B N L Industries Inc |
| 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 |
|---|---|
| GBV-F3-60-0003 DET. NO 5 | B N L Industries Inc (USA) |
| GBV-F3-60-0003-05 PRIMARY | B N L Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| GBV-F3-60-0003 | D/9 Drawing number reference only B N L Industries Inc |
NSN 4820-01-643-7250 is a Seat,valve, manufactured by B N L Industries Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-643-7250 has 2 manufacturer part numbers on file: GBV-F3-60-0003 DET. NO 5 (B N L Industries Inc), GBV-F3-60-0003-05 (B N L Industries Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-646-3897. 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.