The Seat,valve, cataloged under National Stock Number 4820-00-394-2640, 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 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-394-2640 |
| Primary Part Number | 002-18-60-0001-0001 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Body Outside Diameter | 7.427 INCHES MINIMUM AND 7.432 INCHES MAXIMUM IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 4.437 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| Seat Angle in Deg | 8.500 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 |
|---|---|
| 002-18-60-0001-0001 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| 298-40-68PC2 | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
| 002-18-60-0001-0001 | 5/9 Secondary reference Circor Intl Inc |
NSN 4820-00-394-2640 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-394-2640 has 1 manufacturer part number on file: 002-18-60-0001-0001 (Leslie Controls, Inc. Dba Leslie Controls Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-162-3152. Verify interchangeability with system specifications before substitution.
Key specifications for 002-18-60-0001-0001: Overall Height: 0.625 INCHES NOMINAL IN; Body Outside Diameter: 7.427 INCHES MINIMUM AND 7.432 INCHES MAXIMUM IN; Style Designator: PLAIN; Body Inside Diameter: 4.437 INCHES NOMINAL IN. 6 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.