The Valve,check, cataloged under National Stock Number 4820-01-412-5189, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co. 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 | 4820-01-412-5189 |
| Primary Part Number | 54-5B |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co |
| Status | ACTIVE |
| Connection Style | PLAIN (SCREW-IN CARTRIDGE) FIRST END |
| Connection Type | THREADED CARTRIDGE FIRST END |
| Style Designator | SCREW-IN CARTRIDGE |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Thread Series Designator | NPT FIRST END |
| 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 |
|---|---|
| 54-5B PRIMARY | Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co (USA) |
NSN 4820-01-412-5189 is a Valve,check, manufactured by Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-412-5189 has 1 manufacturer part number on file: 54-5B (Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co).
Key specifications for 54-5B: Connection Style: PLAIN (SCREW-IN CARTRIDGE) FIRST END; Connection Type: THREADED CARTRIDGE FIRST END; Style Designator: SCREW-IN CARTRIDGE; Thread Direction: RIGHT-HAND FIRST END. 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.