The Seat,valve, cataloged under National Stock Number 4820-01-075-6589, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-075-6589 |
| Primary Part Number | 2621-926-03ITEM18ATTLG.5IN |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.123 INCHES NOMINAL IN |
| Flange Diameter | 1.682 INCHES NOMINAL IN |
| Body Outside Diameter | 1.432 INCHES NOMINAL IN |
| Taper Minor Diameter | 0.812 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Taper Major Diameter | 1.305 INCHES NOMINAL IN |
| Body Inside Diameter | 0.812 INCHES NOMINAL IN |
| Taper Length | 0.246 INCHES NOMINAL IN |
| Under Flange Height | 0.129 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| Seat Angle in Deg | 35.000 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 |
|---|---|
| 803-5001003-X3XX-04 | Naval Sea Systems Command (USA) |
| 2621-926-03ITEM18ATTLG.5IN PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| 2621-926-03ITEM18ATTLG.5IN | 5/9 Secondary reference Circor Intl Inc |
| 2621-926-03 | D/9 Drawing number reference only U.S. Government activity |
| 803-5001003 PC | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 2621-926-03ITEM18ATTLG.5IN | 5/9 Secondary reference U.S. Government activity |
| 803-5001003 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-075-6589 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-075-6589 has 2 manufacturer part numbers on file: 803-5001003-X3XX-04 (Naval Sea Systems Command), 2621-926-03ITEM18ATTLG.5IN (Leslie Controls, Inc. Dba Leslie Controls Inc).
Key specifications for 2621-926-03ITEM18ATTLG.5IN: Flange Seat to Disk End Height: 0.123 INCHES NOMINAL IN; Flange Diameter: 1.682 INCHES NOMINAL IN; Body Outside Diameter: 1.432 INCHES NOMINAL IN; Taper Minor Diameter: 0.812 INCHES NOMINAL IN. 12 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.