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		                             National Stock Number: 4820-01-067-7977
  Federal Supply Class: 4820
  National Item Identification Number: 010677977
  Description: DISK,VALVE
  Detail: An item of various shapes (usually circular, conical, cylindrical, or rectangular) used to prevent or regulate the flow of liquids or gases through the valve. May include a retainer, screw, holder, and the like. 
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  Manufacturer Information:
 | 2642-253-04 ITEM 17 | 96169 | ELECTRIC BOAT CORPORATION |  | 4687718-0017 | 96169 | ELECTRIC BOAT CORPORATION |  | 845-4687718 ITEM 17 | 80064 | NAVAL SHIP SYSTEMS COMMAND |   
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  Techincal Specification:
 | FLANGE SEAT TO DISK END HEIGHT | 0.945 INCHES NOMINAL |  | INSIDE DIAMETER | 2.000 INCHES NOMINAL |  | MATERIAL | TITANIUM ALLOY |  | OUTSIDE DIAMETER | 2.750 INCHES NOMINAL |  | STYLE DESIGNATOR | SWING CHECK |  | UNDER FLANGE HEIGHT | 0.562 INCHES NOMINAL |   
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