The Seat,valve, cataloged under National Stock Number 4820-00-428-7796, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-00-428-7796 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 5.000 INCHES NOMINAL IN |
| Material | NICKEL ALLOY 400 OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| L3050-3-5IN | C/1 Advisory reference — outside the item-of-supply concept A M I Exchangers Limited |
| 5INL3050-3 | C/1 Advisory reference — outside the item-of-supply concept A M I Exchangers Limited |
| 5INL3050-3 | 3/9 Design control — primary reference Young & Cunningham (glasgow) Ltd |
| L3050-3-5IN | 5/9 Secondary reference Young & Cunningham (glasgow) Ltd |
NSN 4820-00-428-7796 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-428-7796: Style Designator: PLAIN FLANGED; Material Document and Classification: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Body Inside Diameter: 5.000 INCHES NOMINAL IN; Material: NICKEL ALLOY 400 OVERALL. 5 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.