The Seat,valve, cataloged under National Stock Number 4820-00-678-0274, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-678-0274 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Diameter | 1.031 INCHES NOMINAL IN |
| Body Outside Diameter | 1.031 INCHES NOMINAL IN |
| Seal Accommodation Type | RECESSED |
| Style Designator | PLAIN FLANGED |
| Seat Radius | 0.125 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Seating Surface Shape | RADIAL |
| 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 |
|---|---|
| 1869PC17 | 5/9 Secondary reference General Regulator Corp. Dba Accudriv |
| 1883-60 | 3/9 Design control — primary reference General Regulator Corp. Dba Accudriv |
NSN 4820-00-678-0274 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-678-0274: Flange Diameter: 1.031 INCHES NOMINAL IN; Body Outside Diameter: 1.031 INCHES NOMINAL IN; Seal Accommodation Type: RECESSED; Style Designator: PLAIN FLANGED. 7 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.