The Valve,check, cataloged under National Stock Number 4820-01-390-4898, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-390-4898 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Valve Size | 0.250 INCHES IN |
| Face to Face Distance | 1.344 INCHES IN |
| 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 |
|---|---|
| 00339-3001 | 3/9 Design control — primary reference Scovill Inc Schrader Bellows Div |
NSN 4820-01-390-4898 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-577-5058. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-390-4898: Valve Size: 0.250 INCHES IN; Special Features: FLOW CAPACITY 75 SCFM; Face to Face Distance: 1.344 INCHES IN; End Item Identification: PNEUMATIC PLATFORM, 6826 NSN 4940-21-910-0481, SKYJACK INC. 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.