The Valve,check, cataloged under National Stock Number 4820-01-220-6596, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-220-6596 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Mounting Position | HORIZONTAL |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM A351 GR CF8 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A351 GR CF8M ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material | STEEL BODY |
| Material | STEEL FLOW CONTROL DEVICE |
| 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 |
| Reference | Meaning |
|---|---|
| 2349R-4PP | 3/2 Design control — primary reference U.S. Government activity |
| 80040370 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| DS-51083 | D/9 Drawing number reference only U.S. Government activity |
| DS-51083 370 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-220-6596 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-220-6596: Flow Control Device: DISK; Mounting Position: HORIZONTAL; Style Designator: STRAIGHT THRU; Material Document and Classification: ASTM A351 GR CF8 ASSN STD SINGLE MATERIAL RESPONSE BODY. 8 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.