The Valve,check, cataloged under National Stock Number 4820-01-642-0940, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dft, Inc.. Government technical data includes 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-642-0940 |
| Primary Part Number | SCV8371 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dft, Inc. |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Minimum Operating Temp | 37.0 FAHRENHEIT DEGF |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Material Document and Classification | ASTM A351 CF8M ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A351 CF8M ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Valve Size | 1.25 INCHES IN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Maximum Operating Temp | 470.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Face to Face Distance | 3.87 INCHES IN |
| Material | STEEL CORROSION RESISTING SEAT |
| 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 |
|---|---|
| SCV8371 PRIMARY | Dft, Inc. (USA) |
NSN 4820-01-642-0940 is a Valve,check, manufactured by Dft, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-642-0940 has 1 manufacturer part number on file: SCV8371 (Dft, Inc.).
Key specifications for SCV8371: Flow Control Device: DISK; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Minimum Operating Temp: 37.0 FAHRENHEIT DEGF; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 15 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.