NSN 4820-01-254-6775
Part Details | VALVE SEAT
4820-01-254-6775 A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.
Alternate Parts: 206451, 20645-1, 4820-01-254-6775, 01-254-6775, 4820012546775, 012546775
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | MAY 08, 1987 | 01-254-6775 | 22113 ( SEAT, VALVE ) |
REFERENCE DRAWINGS & PICTURES
PLAIN FLANGED
Cross Reference | NSN 4820-01-254-6775
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 20645-1 | 99167 | HAMILTON SUNDSTRAND CORPORATION |
Technical Data | NSN 4820-01-254-6775
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | PLAIN FLANGED |
| FLANGE DIAMETER | 0.372 INCHES MINIMUM AND 0.374 INCHES MAXIMUM |
| BODY OUTSIDE DIAMETER | 0.250 INCHES NOMINAL |
| BODY INSIDE DIAMETER | 0.156 INCHES MINIMUM |
| FLANGE SEAT TO DISK END HEIGHT | 0.078 INCHES MINIMUM AND 0.082 INCHES MAXIMUM |
| UNDER FLANGE HEIGHT | 0.285 INCHES MINIMUM AND 0.299 INCHES MAXIMUM |
| SEATING SURFACE SHAPE | ANGULAR |
| SEAT ANGLE IN DEG | 30.000 NOMINAL |
| FSC APPLICATION DATA | AIRCRAFT HYDRAULIC SYSTEM |