The Valve,check, cataloged under National Stock Number 4820-01-375-7694, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Liquid Metronics Inc. Government technical data includes 6 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 | 4820-01-375-7694 |
| Primary Part Number | 28001 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Liquid Metronics Inc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Thread Series Designator | NPT FIRST END |
| 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 |
|---|---|
| 28001 PRIMARY | Liquid Metronics Inc (USA) |
NSN 4820-01-375-7694 is a Valve,check, manufactured by Liquid Metronics Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-375-7694 has 1 manufacturer part number on file: 28001 (Liquid Metronics Inc).
Key specifications for 28001: Flow Control Device: BALL; Connection Type: THREADED EXTERNAL PIPE FIRST END; Nominal Thread Size: 0.500 INCHES FIRST END IN; Disk Loading Method: SPRING. 6 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.