The Seat,valve, cataloged under National Stock Number 4820-00-005-4902, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Magnatrol Valve Corp Div Clark-Cooper. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-005-4902 |
| Primary Part Number | 2002-12A |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Magnatrol Valve Corp Div Clark-Cooper |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.125 INCHES NOMINAL IN |
| Flange Diameter | 0.718 INCHES NOMINAL IN |
| Thread Length | 0.437 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Style Designator | THREADED FLANGED |
| Body Inside Diameter | 0.250 INCHES NOMINAL IN |
| Nominal Thread Size | 0.500 INCHES SINGLE THREADED PORTION IN |
| Under Flange Height | 0.500 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF SINGLE THREADED PORTION |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 2002-12A PRIMARY | Magnatrol Valve Corp Div Clark-Cooper (USA) |
| Reference | Meaning |
|---|---|
| SH12-3N25 | 5/9 Secondary reference Magnatrol Valve Corp Div Clark-Cooper |
NSN 4820-00-005-4902 is a Seat,valve, manufactured by Magnatrol Valve Corp Div Clark-Cooper, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-005-4902 has 1 manufacturer part number on file: 2002-12A (Magnatrol Valve Corp Div Clark-Cooper).
Key specifications for 2002-12A: Flange Seat to Disk End Height: 0.125 INCHES NOMINAL IN; Flange Diameter: 0.718 INCHES NOMINAL IN; Thread Length: 0.437 INCHES NOMINAL SINGLE THREADED PORTION IN; Style Designator: THREADED FLANGED. 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.