The Valve,check, cataloged under National Stock Number 4820-01-446-2247, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hale Products, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-446-2247 |
| Primary Part Number | 538-0520-00 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hale Products, Inc. |
| 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 |
|---|---|
| 538-0520-00 PRIMARY | Hale Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 538-0520-0 | 5/9 Secondary reference Hale Products, Inc. |
NSN 4820-01-446-2247 is a Valve,check, manufactured by Hale Products, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-446-2247 has 1 manufacturer part number on file: 538-0520-00 (Hale Products, Inc.).
Key specifications for 538-0520-00: End Item Identification: FIREFIGHTING TRUCK MODEL NO. 2640-84. 0 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.