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National Stock Number:
4820-01-221-1172
Federal Supply Class:
4820
National Item Identification Number:
012211172
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:
| 803-5001003-X3X2-52 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| BODY INSIDE DIAMETER | 1.160 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 1.432 INCHES NOMINAL | | CRITICALITY CODE JUSTIFICATION | ZZZY | | FLANGE DIAMETER | 1.632 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.123 INCHES NOMINAL | | MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS | | SEATING SURFACE SHAPE | ANGULAR | | SEAT ANGLE IN DEG | 35.000 NOMINAL | | STYLE DESIGNATOR | PLAIN FLANGED | | TAPER LENGTH | 1.145 INCHES NOMINAL | | TAPER MAJOR DIAMETER | 1.160 INCHES NOMINAL | | TAPER MINOR DIAMETER | 0.015 INCHES NOMINAL | | UNDER FLANGE HEIGHT | 0.152 INCHES NOMINAL |
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