The Valve,check, cataloged under National Stock Number 4820-01-426-0279, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cincinnati Valve Company. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-426-0279 |
| Primary Part Number | 1572C 6IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Cincinnati Valve Company |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material | STEEL BODY |
| Material | STEEL SEAT |
| 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 |
|---|---|
| 1572C 6IN | Cincinnati Valve Company (USA) |
| Reference | Meaning |
|---|---|
| 1572 6IN | 5/9 Secondary reference Lunkenheimer Co |
| 1572C 6IN | 3/9 Design control — primary reference Lunkenheimer Co |
NSN 4820-01-426-0279 is a Valve,check, manufactured by Cincinnati Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-426-0279 has 1 manufacturer part number on file: 1572C 6IN (Cincinnati Valve Company).
Key specifications for 1572C 6IN: Flow Control Device: DISK; Connection Type: FLANGE ALL ENDS; Style Designator: STRAIGHT THRU; Special Features: SWING CHECK TYPE VALVE. 6 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.