The Valve,check, cataloged under National Stock Number 4820-01-644-0489, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fnw Valve Co Div of Familian Northwest Inc. Government technical data includes 10 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 | 4820-01-644-0489 |
| Primary Part Number | FNW16B200C |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fnw Valve Co Div of Familian Northwest Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM A351 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Valve Size | 0.375 INCHES IN |
| Maximum Operating Temp | 356.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Face to Face Distance | 2.560 INCHES IN |
| 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 |
|---|---|
| FNW16B200C PRIMARY | Fnw Valve Co Div of Familian Northwest Inc (USA) |
NSN 4820-01-644-0489 is a Valve,check, manufactured by Fnw Valve Co Div of Familian Northwest Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-644-0489 has 1 manufacturer part number on file: FNW16B200C (Fnw Valve Co Div of Familian Northwest Inc).
Key specifications for FNW16B200C: Flow Control Device: DISK; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU; Material Document and Classification: ASTM A351 ASSN STD SINGLE MATERIAL RESPONSE BODY. 10 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.