The Valve,check, cataloged under National Stock Number 4820-01-595-0314, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-595-0314 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Connection Style | REDUCED GASKET SEAL (TUBE) ALL ENDS |
| Minimum Operating Temp | 0.0 CELSIUS DEGC |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Nominal Outside Diameter Tube Accommodated | 4.0 MILLIMETERS ALL ENDS MM |
| Operating Pressure | 10.0 BAR MAXIMUM SINGLE RESPONSE |
| Maximum Operating Temp | 60.0 CELSIUS SINGLE RESPONSE DEGC |
| Disk Loading Method | SPRING |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | ALUMINUM OR COPPER ALLOY BODY |
| 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 |
|---|---|
| 153462 | 3/9 Design control — primary reference Festo Corporation |
| H-QS-4 | 5/9 Secondary reference Festo Corporation |
NSN 4820-01-595-0314 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-595-0314: Connection Style: REDUCED GASKET SEAL (TUBE) ALL ENDS; Minimum Operating Temp: 0.0 CELSIUS DEGC; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS; Style Designator: STRAIGHT THRU. 11 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.