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		                        | National Stock Number:
 4820-01-459-6513
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 014596513
 
 Description:
 PISTON,VALVE
 
 Detail:
 A CYLINDRICAL ITEM OF VARIOUS CONFIGURATIONS WHICH RECIPROCATES IN A VALVE BODY, ASSISTING IN THE MOVEMENT OF THE DISK TO OPEN OR CLOSE A VALVE. MAY INCLUDE ADDITIONAL COMPONENTS SUCH AS RING(S), COLLAR(S), SPRING(S) AND THE LIKE. EXCLUDES DISK, VALVE.
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 Manufacturer Information:
 
 | 30448TP | 91816 | CIRCOR AEROSPACE, INC. |  | HV50-31 | 91816 | CIRCOR AEROSPACE, INC. | 
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 Techincal Specification:
 
 | MATERIAL | STEEL COMP 303 |  | SPECIAL FEATURES | PISTON;SEAT,VALVE;NHA BLEED VALVE |  | SURFACE TREATMENT | PASSIVATE |  | VALVE DESIGN CONTROL ACTIVITY | 91816 |  | VALVE MODEL NUMBER FOR WHICH DESIGNED | HV50-31 |  | VALVE TYPE FOR WHICH DESIGNED | PRESSURE REDUCING | 
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