The Valve,check, cataloged under National Stock Number 4820-01-233-6839, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-233-6839 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | MAGNETIC PERMEABILITY SHALL NOT EXCEED 2.0 AFTER FABRICATION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2210-B-1VM | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| S-529 ITEM 100 | 5/9 Secondary reference Metso Minerals Industries, Inc. Dba Bulk Material Handling |
| S-529 ITEM 100VM | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 2210-B-1 | 3/1 Design control — primary reference U.S. Government activity |
| 2210-B-1 | 5/9 Secondary reference Metso Minerals Industries, Inc. Dba Bulk Material Handling |
NSN 4820-01-233-6839 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-233-6839: Special Features: CARTRIDGE TYPE VALVE; Reference Number Differentiating Characteristics: MAGNETIC PERMEABILITY SHALL NOT EXCEED 2.0 AFTER FABRICATION. 1 specification is 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.