The Valve,check, cataloged under National Stock Number 4820-01-143-1379, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kidde Fire Fighting, Inc. Div National Foam. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-143-1379 |
| Primary Part Number | 3233-9083-5 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kidde Fire Fighting, Inc. Div National Foam |
| Status | ACTIVE |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 0.500 INCHES IN |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 3233-9083-5 PRIMARY | Kidde Fire Fighting, Inc. Div National Foam (USA) |
| Reference | Meaning |
|---|---|
| 00516040 ITEM 51 | 5/9 Secondary reference Kidde Fire Fighting, Inc. Div National Foam |
| 97751405 | 5/9 Secondary reference Kidde Fire Fighting, Inc. Div National Foam |
NSN 4820-01-143-1379 is a Valve,check, manufactured by Kidde Fire Fighting, Inc. Div National Foam, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-143-1379 has 1 manufacturer part number on file: 3233-9083-5 (Kidde Fire Fighting, Inc. Div National Foam).
Key specifications for 3233-9083-5: Operating Pressure: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Valve Size: 0.500 INCHES IN; Material: COPPER ALLOY OVERALL; Valve Operation Method: AUTOMATIC. 4 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.