The Valve,check, cataloged under National Stock Number 4820-01-241-7799, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-241-7799 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | QQ-W-401 FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-626 FED SPEC 2ND MATERIAL RESPONSE BODY |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 8340806-10 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-241-7799 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-241-7799: Flow Control Device: BALL; Style Designator: STRAIGHT THRU; Material Document and Classification: QQ-W-401 FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-626 FED SPEC 2ND MATERIAL RESPONSE BODY; Special Features: USED ON P/N 7729416-50 SNUBBER ASSY AND P/N 8340884-10 SHIMMY DAMPER,KC-135 AND B-52 AIRCRAFT. 4 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.