The Seat,valve, cataloged under National Stock Number 4820-00-083-2885, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-083-2885 |
| Primary Part Number | 1505013 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 1.188 INCHES NOMINAL IN |
| Flange Diameter | 1.595 INCHES MINIMUM AND 1.605 INCHES MAXIMUM IN |
| Body Outside Diameter | 1.002 INCHES MINIMUM AND 1.003 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | MIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE |
| Body Inside Diameter | 0.500 INCHES NOMINAL IN |
| Seat Radius | 0.432 INCHES MINIMUM AND 0.442 INCHES MAXIMUM IN |
| Under Flange Height | 0.688 INCHES NOMINAL IN |
| Material | COBALT ALLOY FACE |
| Material | CHROMIUM ALLOY SEAT |
| 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 |
|---|---|
| 1505013 | Westinghouse Electric Corp (USA) |
| 1JH1521PC8 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 1505013 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-083-2885 is a Seat,valve, manufactured by Westinghouse Electric Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-083-2885 has 2 manufacturer part numbers on file: 1505013 (Westinghouse Electric Corp), 1JH1521PC8 (Westinghouse Electric Corp).
Key specifications for 1505013: Flange Seat to Disk End Height: 1.188 INCHES NOMINAL IN; Flange Diameter: 1.595 INCHES MINIMUM AND 1.605 INCHES MAXIMUM IN; Body Outside Diameter: 1.002 INCHES MINIMUM AND 1.003 INCHES MAXIMUM IN; Style Designator: PLAIN FLANGED. 11 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.