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National Stock Number:
4820-00-344-1449
Federal Supply Class:
4820
National Item Identification Number:
003441449
Description:
SEAT,VALVE
Detail:
A replaceable item designed to provide a circular 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.
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Manufacturer Information:
| 17181P20 | 00198 | PRATT & WHITNEY CANADA CORP | | 17181P20 | 77445 | RTX CORPORATION |
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Techincal Specification:
| STYLE DESIGNATOR | PLAIN FLANGED | | FLANGE DIAMETER | 2.633 INCHES MINIMUM AND | | 2.653 INCHES MAXIMUM | | BODY OUTSIDE DIAMETER | 2.733 INCHES MINIMUM AND | | 2.777 INCHES MAXIMUM | | BODY INSIDE DIAMETER | 2.182 INCHES MINIMUM AND | | 2.192 INCHES MAXIMUM | | FLANGE SEAT TO DISK END HEIGHT | 0.436 INCHES MINIMUM AND | | 0.438 INCHES MAXIMUM | | UNDER FLANGE HEIGHT | 0.136 INCHES MINIMUM AND | | 0.144 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5700 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | HARDNESS RATING | 90.0 ROCKWELL B MINIMUM AND | | 105.0 ROCKWELL B MAXIMUM OVERALL | | SEATING SURFACE SHAPE | ANGULAR | | SEAT ANGLE IN DEG | 45.000 NOMINAL | | FSC APPLICATION DATA | ACFT ENG R1830 | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 77445 | | DESIGN CONTROL REFERENCE | 17181P20 |
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