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		                        | National Stock Number:
 4820-00-834-4681
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 008344681
 
 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:
 
 | 20-03810 | 03670 | TYCO FIRE PRODUCTS LP |  | V-3810 | 53154 | PORTLAND VALVE LLC |  | V3511PC4 | 03670 | TYCO FIRE PRODUCTS LP |  | V3810 | 03670 | TYCO FIRE PRODUCTS LP | 
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 Techincal Specification:
 
 | BODY INSIDE DIAMETER | 4.500 INCHES MINIMUM AND 4.505 INCHES MAXIMUM |  | BODY OUTSIDE DIAMETER | 5.990 INCHES MINIMUM AND 5.998 INCHES MAXIMUM |  | OVERALL HEIGHT | 0.625 INCHES NOMINAL |  | MATERIAL | PLASTIC POLYAMIDE (NYLON) OVERALL |  | SEAT ANGLE IN DEG | 45.000 NOMINAL |  | SEATING SURFACE SHAPE | ANGULAR |  | STYLE DESIGNATOR | PLAIN | 
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