The Seat,valve, cataloged under National Stock Number 4820-00-339-5151, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Clayton Manufacturing Company. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-339-5151 |
| Primary Part Number | JL5307 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Clayton Manufacturing Company |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.181 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN |
| Flange Diameter | 0.452 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.235 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.215 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Under Flange Height | 1.000 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Seat Angle in Deg | 30.000 NOMINAL |
| Seating Surface Shape | ANGULAR |
| 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 |
|---|---|
| JL5307 PRIMARY | Clayton Manufacturing Company (USA) |
NSN 4820-00-339-5151 is a Seat,valve, manufactured by Clayton Manufacturing Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-339-5151 has 1 manufacturer part number on file: JL5307 (Clayton Manufacturing Company).
Key specifications for JL5307: Flange Seat to Disk End Height: 0.181 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN; Flange Diameter: 0.452 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN; Body Outside Diameter: 0.235 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN; Style Designator: PLAIN FLANGED. 10 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.