The Seat,valve, cataloged under National Stock Number 4820-00-941-1207, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-941-1207 |
| Primary Part Number | 519509 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Body Outside Diameter | 1.378 INCHES NOMINAL IN |
| Body Inside Diameter | 1.060 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 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 |
|---|---|
| 519509 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 519509 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 519509 | 5/9 Secondary reference Royal Oak Gage, Inc |
NSN 4820-00-941-1207 is a Seat,valve, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-941-1207 has 1 manufacturer part number on file: 519509 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 519509: Overall Height: 0.250 INCHES NOMINAL IN; Body Outside Diameter: 1.378 INCHES NOMINAL IN; Body Inside Diameter: 1.060 INCHES NOMINAL IN; Material: ALUMINUM ALLOY OVERALL. 5 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.