The Valve,check, cataloged under National Stock Number 4820-01-372-4802, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kidde Technologies, Inc Div Kidde Aerospace and Defense. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-372-4802 |
| Primary Part Number | WK-264985-000 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kidde Technologies, Inc Div Kidde Aerospace and Defense |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 1800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Material | COPPER ALLOY 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 |
|---|---|
| WK-264985-000 PRIMARY | Kidde Technologies, Inc Div Kidde Aerospace and Defense (USA) |
| Reference | Meaning |
|---|---|
| 264985 | 5/9 Secondary reference Kidde-Fenwal, Llc |
| 264985 | 3/9 Design control — primary reference Kidde Technologies, Inc Div Kidde Aerospace and Defense |
NSN 4820-01-372-4802 is a Valve,check, manufactured by Kidde Technologies, Inc Div Kidde Aerospace and Defense, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-372-4802 has 1 manufacturer part number on file: WK-264985-000 (Kidde Technologies, Inc Div Kidde Aerospace and Defense).
Key specifications for WK-264985-000: Flow Control Device: DISK; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Mounting Position: HORIZONTAL; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 11 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.