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National Stock Number:
4820-01-541-7287
Federal Supply Class:
4820
National Item Identification Number:
015417287
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:
| 5001003 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 803-5001003-X7X1-04 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 803-5001003-X7X1-04CP | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG | | 803-5001003-X7XX-04 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| STYLE DESIGNATOR | PLAIN FLANGED | | FLANGE DIAMETER | 3.557 INCHES NOMINAL | | OVERALL HEIGHT | 0.330 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 2.557 INCHES NOMINAL | | BODY INSIDE DIAMETER | 1.500 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.330 INCHES NOMINAL | | UNDER FLANGE HEIGHT | 0.170 INCHES NOMINAL | | BODY STEPPED INSIDE DIAMETER | 2.557 INCHES NOMINAL FIRST STEP | | MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL | | SEATING SURFACE SHAPE | ANGULAR | | SEAT ANGLE IN DEG | 45.000 NOMINAL | | SPECIAL FEATURES | MATERIAL IS VIRGIN PTFE, GLASS REINFORCED IAW ASTM 4745 TYPE II GRADE 15% GLASS FIBER; MUST MEET APPLICABLE STACK HEIGHT REQUIREMENT IN TABLE NO. 284, PG 28 OF DRAWING | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D | | CRITICALITY CODE JUSTIFICATION | ZZZY | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SEAT | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 53711 | | DESIGN CONTROL REFERENCE | 803-5001003-X7X1-04 |
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