The Seat,valve, cataloged under National Stock Number 4820-01-262-5219, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-262-5219 |
| Primary Part Number | A7599.001.127 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| Style Designator | DOUBLE FLANGED |
| Body Inside Diameter | 0.500 INCHES NOMINAL IN |
| Nominal Thread Size | 1.000 INCHES FIRST THREADED PORTION IN |
| Nominal Thread Size | 1.125 INCHES SECOND THREADED PORTION IN |
| Thread Class | 2A SECOND THREADED PORTION A |
| Thread Class | 2A FIRST THREADED PORTION A |
| Material | NICKEL ALLOY SEAT |
| Thread Series Designator | UNEF SECOND THREADED PORTION |
| Thread Series Designator | UNEF FIRST THREADED PORTION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A7599.001.127 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| A7599.001.127 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-262-5219 is a Seat,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-262-5219 has 1 manufacturer part number on file: A7599.001.127 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for A7599.001.127: Overall Height: 1.281 INCHES NOMINAL IN; Style Designator: DOUBLE FLANGED; Body Inside Diameter: 0.500 INCHES NOMINAL IN; Nominal Thread Size: 1.000 INCHES FIRST THREADED PORTION IN. 9 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.