The Valve,check, cataloged under National Stock Number 4820-01-652-6769, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-652-6769 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Connection Style | SWIVEL NUT, INVERTED FLARE (TUBE) FIRST END |
| Connection Type | THREADED CARTRIDGE FIRST END |
| Style Designator | SCREW-IN CARTRIDGE |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 1.4 MILLIMETERS FIRST END MM |
| Seat Angle | 2.0 DEGREES FIRST END |
| Material | STEEL BODY |
| Thread Series Designator | NPTF FIRST END |
| 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 |
|---|---|
| 28001-104-28 | 3/9 Design control — primary reference Vonberg Valve, Inc. |
NSN 4820-01-652-6769 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-652-6769: Connection Style: SWIVEL NUT, INVERTED FLARE (TUBE) FIRST END; Connection Type: THREADED CARTRIDGE FIRST END; Style Designator: SCREW-IN CARTRIDGE; Thread Direction: RIGHT-HAND FIRST END. 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.