The Valve,check, cataloged under National Stock Number 4820-01-681-6834, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tyco Fire Products Lp. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Tyco Fire Products Lp (CAGE 03670) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-681-6834 |
| Primary Part Number | 443832 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tyco Fire Products Lp |
| 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 |
|---|---|
| 443832 | Tyco Fire Products Lp (USA) |
| Reference | Meaning |
|---|---|
| 443832 REV 0 | D/9 Drawing number reference only Tyco Fire Products Lp |
| 443805 REV 1 ITEM 2 | C/1 Advisory reference — outside the item-of-supply concept Tyco Fire Products Lp |
| C6375 REV AA NO. C6375-03J | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| C6375-03J | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-681-6834 is a Valve,check, manufactured by Tyco Fire Products Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-681-6834 has 1 manufacturer part number on file: 443832 (Tyco Fire Products Lp).
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.