The Seat,valve, cataloged under National Stock Number 4820-01-191-6465, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Discovery Corporation. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-191-6465 |
| Primary Part Number | 1895646 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Discovery Corporation |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.688 INCHES NOMINAL IN |
| Flange Diameter | 1.281 INCHES NOMINAL IN |
| Body Outside Diameter | 1.159 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Taper Major Diameter | 0.875 INCHES NOMINAL IN |
| Body Inside Diameter | 0.781 INCHES NOMINAL IN |
| Taper Length | 0.125 INCHES NOMINAL IN |
| Under Flange Height | 0.750 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY OVERALL |
| Seat Angle in Deg | 45.000 NOMINAL |
| Seating Surface Shape | ANGULAR |
| 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 |
|---|---|
| 1895646 PRIMARY | Discovery Corporation (USA) |
| N5586 PIECE 89 PRIMARY | Tate Andale, Llc (USA) |
| Reference | Meaning |
|---|---|
| N5586 | D/9 Drawing number reference only Tate Andale, Llc |
NSN 4820-01-191-6465 is a Seat,valve, manufactured by Discovery Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-191-6465 has 2 manufacturer part numbers on file: 1895646 (Discovery Corporation), N5586 PIECE 89 (Tate Andale, Llc).
Key specifications for 1895646: Flange Seat to Disk End Height: 0.688 INCHES NOMINAL IN; Flange Diameter: 1.281 INCHES NOMINAL IN; Body Outside Diameter: 1.159 INCHES NOMINAL IN; Style Designator: PLAIN 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.