The Seat,valve, cataloged under National Stock Number 4810-00-339-4537, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 17 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-339-4537 |
| Primary Part Number | 1387360 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.477 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN |
| Flange Diameter | 1.907 INCHES MINIMUM AND 1.917 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | MIL-S-853 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Body Inside Diameter | 0.969 INCHES NOMINAL IN |
| Seat Radius | 0.188 INCHES NOMINAL IN |
| Under Flange Height | 1.270 INCHES NOMINAL IN |
| Material | STEEL BODY |
| 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 |
|---|---|
| 1387360 | Westinghouse Electric Corp (USA) |
| 25J553PC210 | Westinghouse Electric Corp (USA) |
| 25J492PC12-64 | Westinghouse Electric Corp (USA) |
| 25J641PC210 | Westinghouse Electric Corp (USA) |
| 25J491PC38 | Westinghouse Electric Corp (USA) |
| 25J427PC210 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 1387360 | 3/9 Design control — primary reference Westinghouse Electric Corp Control Business Unit |
| BB61S61-123ALT8PC210 | 5/2 Secondary reference U.S. Government activity |
| 25J427PC210 | 5/2 Secondary reference U.S. Government activity |
| 25J492PC12-64 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 25J491PC38 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 1387360 | 5/2 Secondary reference U.S. Government activity |
| BB61S61-034ALT1PC210 | 5/2 Secondary reference U.S. Government activity |
| 25J641PC210 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| BB61S61-0126ALT1PC40 | 5/2 Secondary reference U.S. Government activity |
| CV9S6100-552ALT7PC210 | 5/2 Secondary reference U.S. Government activity |
| BB61S61-0125PC38 | 5/2 Secondary reference U.S. Government activity |
| BB61S61-143PC12-64 | 5/2 Secondary reference U.S. Government activity |
| 25J491PC38 | 5/2 Secondary reference U.S. Government activity |
| 1387360 | 5/9 Secondary reference U.S. Government activity |
| 25J492PC12-64 | 5/2 Secondary reference U.S. Government activity |
| 25J427PC210 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 25J553PC210 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
NSN 4810-00-339-4537 is a Seat,valve, manufactured by Westinghouse Electric Corp, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-339-4537 has 6 manufacturer part numbers on file: 1387360 (Westinghouse Electric Corp), 25J553PC210 (Westinghouse Electric Corp), 25J492PC12-64 (Westinghouse Electric Corp), 25J641PC210 (Westinghouse Electric Corp), 25J491PC38 (Westinghouse Electric Corp) and 1 more.
Key specifications for 1387360: Flange Seat to Disk End Height: 0.477 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN; Flange Diameter: 1.907 INCHES MINIMUM AND 1.917 INCHES MAXIMUM IN; Style Designator: PLAIN FLANGED; Material Document and Classification: MIL-S-853 MIL SPEC SINGLE MATERIAL RESPONSE BODY. 9 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.