The Valve,check, cataloged under National Stock Number 4820-01-549-1223, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is E-One, Inc. Dba E-One Hamburg. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-549-1223 |
| Primary Part Number | 286571 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | E-One, Inc. Dba E-One Hamburg |
| Status | ACTIVE |
| Material | COPPER ALLOY BODY |
| Material | STEEL FLOW CONTROL DEVICE |
| 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 |
|---|---|
| 286571 PRIMARY | E-One, Inc. Dba E-One Hamburg (USA) |
| Reference | Meaning |
|---|---|
| 286571 | 5/9 Secondary reference Delta Fire Service Pty Ltd |
| 375-250 | 5/2 Secondary reference U.S. Government activity |
| 286571 | 5/9 Secondary reference Delta Eco |
NSN 4820-01-549-1223 is a Valve,check, manufactured by E-One, Inc. Dba E-One Hamburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-549-1223 has 1 manufacturer part number on file: 286571 (E-One, Inc. Dba E-One Hamburg).
Key specifications for 286571: Special Features: 2.5 NPT; Material: COPPER ALLOY BODY; Material: STEEL FLOW CONTROL DEVICE. 2 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.