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		                        | National Stock Number:
 4820-00-767-7209
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 007677209
 
 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:
 
 | NL0258- | 0BR59 | SIEMENS GOVERNMENT TECHNOLOGIES, INC. |  | NL258-1 | 93591 | PENTAIR VALVES & CONTROLS US LP DIV FLOW CONTROL US HOLDING CORP | 
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 Techincal Specification:
 
 | STYLE DESIGNATOR | PLAIN FLANGED |  | FLANGE DIAMETER | 5.377 INCHES MINIMUM AND |  |  | 5.378 INCHES MAXIMUM |  | BODY OUTSIDE DIAMETER | 4.499 INCHES MINIMUM AND |  |  | 4.500 INCHES MAXIMUM |  | BODY INSIDE DIAMETER | 3.250 INCHES NOMINAL |  | FLANGE SEAT TO DISK END HEIGHT | 0.812 INCHES NOMINAL |  | UNDER FLANGE HEIGHT | 1.188 INCHES NOMINAL |  | MATERIAL | STEEL BODY |  |  | ROD,WELDING,SURFACING FACE |  | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A182,GRADE F12 ASSN STD SINGLE MATERIAL RESPONSE BODY |  |  | MIL-R-17131,TYPE MIL-RCOCR-A MIL SPEC SINGLE MATERIAL RESPONSE FACE |  | SEATING SURFACE SHAPE | RADIAL |  | SEAT RADIUS | 1.000 INCHES NOMINAL |  | TAPER MINOR DIAMETER | 3.381 INCHES NOMINAL |  | TAPER MAJOR DIAMETER | 5.062 INCHES NOMINAL |  | TAPER LENGTH | 0.625 INCHES NOMINAL |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 93591 |  | DESIGN CONTROL REFERENCE | NL258-1 | 
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