The Valve,check, cataloged under National Stock Number 4820-01-478-5457, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-478-5457 |
| Primary Part Number | F12-1114C-15MYG DWG 7490-725 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Minimum Operating Temp | 775.0 FAHRENHEIT DEGF |
| Connection Type | FLANGE ALL ENDS |
| Material Document and Classification | ASTMA35/CF8C ASSN STD 1ST MATERIAL RESPONSE BODY |
| Valve Size | 4.000 INCHES IN |
| Material | STEEL UNS J92710 BODY |
| Opening Pressure Setting | 460.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| F12-1114C-15MYG DWG 7490-725 PRIMARY | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| F12-1114C-15MY | 5/9 Secondary reference Velan Valve Corp. |
| P4-47661-G | D/9 Drawing number reference only Velan Valve Corp. |
| F12-1114C-15MY-7490-725 | 5/9 Secondary reference Velan Valve Corp. |
NSN 4820-01-478-5457 is a Valve,check, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-478-5457 has 1 manufacturer part number on file: F12-1114C-15MYG DWG 7490-725 (Velan Valve Corp.).
Key specifications for F12-1114C-15MYG DWG 7490-725: Flow Control Device: DISK; Minimum Operating Temp: 775.0 FAHRENHEIT DEGF; Connection Type: FLANGE ALL ENDS; Material Document and Classification: ASTMA35/CF8C ASSN STD 1ST MATERIAL RESPONSE BODY. 7 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.