The Valve,check, cataloged under National Stock Number 4820-01-255-7756, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Le Bozec Filtration Et Systemes. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Le Bozec Filtration Et Systemes (CAGE F0218) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-255-7756 |
| Primary Part Number | 437407/1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Le Bozec Filtration Et Systemes |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 437407/1 | Le Bozec Filtration Et Systemes (FRA) |
| Reference | Meaning |
|---|---|
| 437407/1 | 3/9 Design control — primary reference Castelli, Joseph L |
| 437407/1 | 5/9 Secondary reference Le Bozec Filtration Et Systemes |
| 437407/1 | 5/9 Secondary reference Allied Defense Industries, Llc Dba Ams Distribution |
| 437407/1 | 5/9 Secondary reference Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
NSN 4820-01-255-7756 is a Valve,check, manufactured by Le Bozec Filtration Et Systemes, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-255-7756 has 1 manufacturer part number on file: 437407/1 (Le Bozec Filtration Et Systemes).
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.