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		                             National Stock Number: 4820-01-095-2015
  Federal Supply Class: 4820
  National Item Identification Number: 010952015
  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:
 | 559A-2MP-1 | 91816 | CIRCOR AEROSPACE, INC. |  | 559N-2MP-1 | 91816 | CIRCOR AEROSPACE, INC. |  | SM-A-948028-2 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |  | SM-A948028 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |   
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  Techincal Specification:
 | DISK LOADING METHOD | SPRING |  | CONNECTION TYPE | THREADED EXTERNAL PIPE 1ST ENDTHREADED INTERNAL PIPE 2ND END |  | CONNECTION STYLE | PLAIN (PIPE) 1ST ENDPLAIN,OPTIONAL END(PIPE) 2ND END |  | FLOW CONTROL DEVICE | POPPET |  | MATERIAL | ALUMINUM ALLOY BODY |  | PROPRIETARY CHARACTERISTICS | PACS |  | MAXIMUM OPERATING TEMP | 250.0 DEG FAHRENHEIT SINGLE RESPONSE |  | MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |  | MEDIA FOR WHICH DESIGNED | HYDROGEN 5TH RESPONSE |  | MEDIA FOR WHICH DESIGNED | REFRIGERANT 12 4TH RESPONSE |  | MEDIA FOR WHICH DESIGNED | ACETYLENE 2ND RESPONSE |  | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE |  | MEDIA FOR WHICH DESIGNED | AMMONIA, GASEOUS 3RD RESPONSE |  | NOMINAL THREAD SIZE | 0.250 INCHES 1ST END |  | NOMINAL THREAD SIZE | 0.250 INCHES 2ND END |  | OPENING PRESSURE SETTING | 1.0 POUNDS PER SQUARE INCH |  | SPECIAL FEATURES | INLINE TYPE |  | VALVE OPERATION METHOD | AUTOMATIC |  | STYLE DESIGNATOR | STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY. |  | THREAD DIRECTION | RIGHT-HAND 1ST END |  | THREAD DIRECTION | RIGHT-HAND 2ND END |  | THREAD SERIES DESIGNATOR | NPT 2ND END |  | THREAD SERIES DESIGNATOR | NPT 1ST END |   
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