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		                        | National Stock Number:
 4820-00-287-4637
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 002874637
 
 Description:
 VALVE,SAFETY RELIEF
 
 Detail:
 A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.
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 Manufacturer Information:
 
 | 282-4900-801823REVCPCV50 | 80064 | NAVAL SHIP SYSTEMS COMMAND |  | 385-4900-1225407ALT1PCV3 | 80064 | NAVAL SHIP SYSTEMS COMMAND |  | 4824-158796PC1-4-625 | 80064 | NAVAL SHIP SYSTEMS COMMAND |  | 4824-934713ALT10PC1-4625 | 80064 | NAVAL SHIP SYSTEMS COMMAND |  | 4824-934713PC1T012 | 80064 | NAVAL SHIP SYSTEMS COMMAND |  | 43835ALT10PC1-4625 | 81316 | PORTSMOUTH NAVAL SHIPYARD | 
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 Techincal Specification:
 
 | STYLE DESIGNATOR | ANGLE |  | VALVE OPERATION METHOD | AUTOMATIC |  | MATERIAL | COPPER ALLOY BODY |  |  | NICKEL ALLOY SEAT |  | FLOW CONTROL DEVICE | DISK |  | CONNECTION TYPE | THREADED INTERNAL PIPE 1ST END |  |  | THREADED EXTERNAL PIPE 2ND END |  | CONNECTION STYLE | PLAIN,OPTIONAL END(PIPE) 1ST END |  |  | PLAIN (PIPE) 2ND END |  | NOMINAL PIPE SIZE ACCOMMODATED | 0.250 INCHES 1ST END |  |  | 0.250 INCHES 2ND END |  | THREAD SERIES DESIGNATOR | NPT 1ST END |  |  | NPT 2ND END |  | NOMINAL THREAD SIZE | 0.250 INCHES 1ST END |  |  | 0.250 INCHES 2ND END |  | THREAD QUANTITY PER INCH | 18 1ST END |  |  | 18 2ND END |  | THREAD DIRECTION | RIGHT-HAND 1ST END |  |  | RIGHT-HAND 2ND END |  | DISK LOADING METHOD | SPRING |  | OPENING PRESSURE SETTING | 625.0 POUNDS PER SQUARE INCH |  | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY PAC ADSV AND VALVE SIZE |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 80064 |  | DESIGN CONTROL REFERENCE | 4824-934713PC1T012 | 
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