The Seat,valve, cataloged under National Stock Number 4820-00-976-3236, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is General Electric Company. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-976-3236 |
| Primary Part Number | 137B367-4 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.898 INCHES MINIMUM AND 0.900 INCHES MAXIMUM IN |
| Flange Diameter | 4.750 INCHES MINIMUM AND 4.751 INCHES MAXIMUM IN |
| Body Outside Diameter | 3.812 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 3.013 INCHES MINIMUM AND 3.015 INCHES MAXIMUM IN |
| Seat Radius | 1.042 INCHES MINIMUM AND 1.052 INCHES MAXIMUM IN |
| Under Flange Height | 2.938 INCHES NOMINAL IN |
| 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 |
|---|---|
| 137B367-4 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 328D450PC3 | 5/9 Secondary reference General Electric Company |
| 137B367 | D/9 Drawing number reference only General Electric Company |
| 328D450 | 5/9 Secondary reference General Electric Company |
NSN 4820-00-976-3236 is a Seat,valve, manufactured by General Electric Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-976-3236 has 1 manufacturer part number on file: 137B367-4 (General Electric Company).
Key specifications for 137B367-4: Flange Seat to Disk End Height: 0.898 INCHES MINIMUM AND 0.900 INCHES MAXIMUM IN; Flange Diameter: 4.750 INCHES MINIMUM AND 4.751 INCHES MAXIMUM IN; Body Outside Diameter: 3.812 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.