The Seat,valve, cataloged under National Stock Number 4820-01-067-9205, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-067-9205 |
| Primary Part Number | SS 209-1414506PC20 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Body Outside Diameter | 3.375 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 2.875 INCHES MINIMUM AND 2.877 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY E OVERALL |
| Seat Angle in Deg | 45.000 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 |
|---|---|
| SS 209-1414506PC20 PRIMARY | Naval Sea Systems Command (USA) |
| SS 209-1414506PC20 PRIMARY | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| SS 209-1414506PC20 | 5/9 Secondary reference U.S. Government activity |
| SS 209-1414506PC20 | 5/9 Secondary reference U.S. Government activity |
| SS 209-1414506 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-067-9205 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-067-9205 has 2 manufacturer part numbers on file: SS 209-1414506PC20 (Naval Sea Systems Command), SS 209-1414506PC20 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).
Key specifications for SS 209-1414506PC20: Overall Height: 0.625 INCHES NOMINAL IN; Body Outside Diameter: 3.375 INCHES NOMINAL IN; Style Designator: PLAIN; Material Document and Classification: QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 7 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.