The Seat,valve, cataloged under National Stock Number 4820-00-506-8583, 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 14 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-506-8583 |
| Primary Part Number | 12132-4 |
| 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 | 0.250 INCHES NOMINAL IN |
| Flange Diameter | 2.750 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Seal Accommodation Type | GROOVED |
| Style Designator | THREADED FLANGED |
| Body Inside Diameter | 2.016 INCHES NOMINAL IN |
| Nominal Thread Size | 2.500 INCHES SINGLE THREADED PORTION IN |
| Seat Radius | 0.125 INCHES NOMINAL IN |
| Under Flange Height | 0.687 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Thread Quantity Per Inch | 14 SINGLE THREADED PORTION |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNS SINGLE THREADED PORTION |
| Seating Surface Shape | RADIAL |
| 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 |
|---|---|
| 30H2005PC7 | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| 12132-4 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
NSN 4820-00-506-8583 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-506-8583 has 2 manufacturer part numbers on file: 30H2005PC7 (Leslie Controls, Inc. Dba Leslie Controls Inc), 12132-4 (Leslie Controls, Inc. Dba Leslie Controls Inc).
2 possible matches (shared part number, not a government interchangeability claim): 2990-00-693-0546, 8115-01-729-2954. Verify interchangeability with system specifications before substitution.
Key specifications for 12132-4: Flange Seat to Disk End Height: 0.250 INCHES NOMINAL IN; Flange Diameter: 2.750 INCHES NOMINAL IN; Thread Length: 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN; Seal Accommodation Type: GROOVED. 14 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.