The Valve,check, cataloged under National Stock Number 4820-01-169-8577, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is General Dynamics Land Systems Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-169-8577 |
| Primary Part Number | 7566282-001 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | General Dynamics Land Systems Inc. |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Style | FLARED (TUBE) FIRST END |
| Connection Style | FLARE (TUBE) SECOND END |
| Material Document and Classification | QQ-N-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 280.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY 2024 BODY |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR 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 |
|---|---|
| 7566282-001 | General Dynamics Land Systems Inc. (USA) |
| Reference | Meaning |
|---|---|
| 7566282 | 5/9 Secondary reference General Dynamics Land Systems Inc. |
| 859A-4BT | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-169-8577 is a Valve,check, manufactured by General Dynamics Land Systems Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-169-8577 has 1 manufacturer part number on file: 7566282-001 (General Dynamics Land Systems Inc.).
Key specifications for 7566282-001: Flow Control Device: POPPET; Connection Style: FLARED (TUBE) FIRST END; Connection Style: FLARE (TUBE) SECOND END; Material Document and Classification: QQ-N-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY. 9 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.