The Valve,check, cataloged under National Stock Number 4820-01-441-9365, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems (CAGE 73168); Kidde-Fenwal, Llc (CAGE 0KDP7) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-441-9365 |
| Primary Part Number | 325442 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems |
| Status | ACTIVE |
| 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 |
|---|---|
| 325442 PRIMARY | Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems (USA) |
| 259404 | Kidde-Fenwal, Llc (USA) |
| 259404 | Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems (USA) |
| Reference | Meaning |
|---|---|
| 325442 | D/9 Drawing number reference only Kidde Technologies, Inc Div Kidde Aerospace and Defense |
| 259404 | 5/9 Secondary reference Kidde Technologies, Inc Div Kidde Aerospace and Defense |
NSN 4820-01-441-9365 is a Valve,check, manufactured by Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-441-9365 has 3 manufacturer part numbers on file: 325442 (Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems), 259404 (Kidde-Fenwal, Llc), 259404 (Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems).
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.