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		                        | National Stock Number:
 4820-01-551-2857
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 015512857
 
 Description:
 RETAINER,DISK,VALVE
 
 Detail:
 An item of various shapes and cross-sections, that may be flanged and that is designed to fit over a valve disk, allowing proper position of disk-to-valve seat within a valve body.
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 Manufacturer Information:
 
 | 4807001 | 16497 | DRESSER, INC. | 
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 Techincal Specification:
 
 | SPECIAL FEATURES | USED ON 4820-01-551-2812 SAFETY RELIEF VALVE |  | VALVE DESIGN CONTROL ACTIVITY | 16497 |  | VALVE MODEL NUMBER FOR WHICH DESIGNED | 1912-00H |  | VALVE SIZE FOR WHICH DESIGNED | 2.000 INCHES | 
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