The Valve,check, cataloged under National Stock Number 4820-01-397-4877, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Vogt Edward Valve Co a British Tire & Rubber Co. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-397-4877 |
| Primary Part Number | FIG838-1IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Vogt Edward Valve Co a British Tire & Rubber Co |
| Status | ACTIVE |
| Flow Control Device | PISTON |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A182, F11 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.000 INCHES ALL ENDS IN |
| Maximum Operating Temp | 100.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Material | STEEL CORROSION RESISTING BODY |
| Thread Series Designator | NPT ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| FIG838-1IN PRIMARY | Vogt Edward Valve Co a British Tire & Rubber Co (USA) |
| Reference | Meaning |
|---|---|
| 47120073-07 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-397-4877 is a Valve,check, manufactured by Vogt Edward Valve Co a British Tire & Rubber Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-397-4877 has 1 manufacturer part number on file: FIG838-1IN (Vogt Edward Valve Co a British Tire & Rubber Co).
Key specifications for FIG838-1IN: Flow Control Device: PISTON; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 14 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.