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		                             National Stock Number: 4820-00-138-8962
  Federal Supply Class: 4820
  National Item Identification Number: 001388962
  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:
 | 002-0057-90 | 53154 | PORTLAND VALVE LLC |  | 002-0057-90Q3 | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG |   
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  Techincal Specification:
 | CRITICALITY CODE JUSTIFICATION | ZZZY |  | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | ITEM THAT SUPPORTS A LEVEL 1 OR SUBSAFE CRITICAL SYSTEM THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS |   
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