The Seat,valve, cataloged under National Stock Number 4820-01-122-3675, 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 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-122-3675 |
| Primary Part Number | 298-00-204 PIECE 14 3-8IN |
| 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 | 0.195 INCHES NOMINAL IN |
| Flange Diameter | 1.057 INCHES NOMINAL IN |
| Body Outside Diameter | 0.930 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.563 INCHES NOMINAL IN |
| Under Flange Height | 0.110 INCHES NOMINAL IN |
| Material | PLASTIC FLUORINATED ETHYLENE PROPYLENE OVERALL |
| 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 |
|---|---|
| 298-00-204 PIECE 14 3-8IN PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| 298-00-204 PIECE 14 3-8IN | 5/9 Secondary reference Circor Intl Inc |
| 298-00-204 | D/9 Drawing number reference only Circor Intl Inc |
NSN 4820-01-122-3675 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-122-3675 has 1 manufacturer part number on file: 298-00-204 PIECE 14 3-8IN (Leslie Controls, Inc. Dba Leslie Controls Inc).
Key specifications for 298-00-204 PIECE 14 3-8IN: Flange Seat to Disk End Height: 0.195 INCHES NOMINAL IN; Flange Diameter: 1.057 INCHES NOMINAL IN; Body Outside Diameter: 0.930 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED. 8 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.