The Seat,valve, cataloged under National Stock Number 4820-00-388-1233, 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 6 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-00-388-1233 |
| Primary Part Number | 13E757-7 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 2.000 INCHES NOMINAL IN |
| Flange Diameter | 6.355 INCHES MINIMUM AND 6.365 INCHES MAXIMUM IN |
| Body Outside Diameter | 5.969 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 5.516 INCHES NOMINAL IN |
| Under Flange Height | 6.703 INCHES NOMINAL IN |
| 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 |
|---|---|
| 13E757-7 PRIMARY | Westinghouse Electric Corp (USA) |
| 13E757 PIECE 7 PRIMARY | Westinghouse Electric Corp (USA) |
| 16F801 PIECE 43 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 13-E-757-7 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-00-388-1233 is a Seat,valve, manufactured by Westinghouse Electric Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-388-1233 has 3 manufacturer part numbers on file: 13E757-7 (Westinghouse Electric Corp), 13E757 PIECE 7 (Westinghouse Electric Corp), 16F801 PIECE 43 (Westinghouse Electric Corp).
Key specifications for 13E757-7: Flange Seat to Disk End Height: 2.000 INCHES NOMINAL IN; Flange Diameter: 6.355 INCHES MINIMUM AND 6.365 INCHES MAXIMUM IN; Body Outside Diameter: 5.969 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED. 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.