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		                        | National Stock Number:
 4820-00-287-4433
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 002874433
 
 Description:
 VALVE,CHECK
 
 Detail:
 A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
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 Manufacturer Information:
 
 | 10164350 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |  | 259A-2PP-2.5 | 91816 | CIRCOR AEROSPACE, INC. |  | 317337-1 | 3B150 | RAYTHEON COMPANY |  | 259A2PP | 91815 | JACOBUS A G SONS INC |  | 259A2PP | 91816 | CIRCOR AEROSPACE, INC. |  | 269A2PP2-5 | 91816 | CIRCOR AEROSPACE, INC. |  | 556-8818 | 11530 | LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN INFORMATION SYSTEMS & GLOBAL SOLUTIONS |  | 317337-1 | 49956 | RAYTHEON COMPANY |  | 317337-1 | 54X10 | RAYTHEON COMPANY | 
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 Techincal Specification:
 
 | MATERIAL | ALUMINUM ALLOY OVERALL |  | STYLE DESIGNATOR | STRAIGHT THRU |  | FLOW CONTROL DEVICE | POPPET |  | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE |  |  | ACETYLENE 2ND RESPONSE |  |  | ALCOHOL, ETHYL 3RD RESPONSE |  |  | AMMONIA, GASEOUS 4TH RESPONSE |  |  | CARBON DIOXIDE 5TH RESPONSE |  | MAXIMUM OPERATING PRESSURE | 75.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |  | MAXIMUM OPERATING TEMP | -40.0 DEG FAHRENHEIT 1ST RESPONSE |  |  | 250.0 DEG FAHRENHEIT 2ND RESPONSE |  | VALVE OPERATION METHOD | AUTOMATIC |  | CONNECTION TYPE | THREADED INTERNAL PIPE ALL ENDS |  | CONNECTION STYLE | PLAIN, OPTIONAL END (PIPE) ALL ENDS |  | THREAD SERIES DESIGNATOR | NPT ALL ENDS |  | NOMINAL THREAD SIZE | 0.250 INCHES ALL ENDS |  | THREAD DIRECTION | RIGHT-HAND ALL ENDS |  | MOUNTING POSITION | HORIZONTAL OR |  |  | VERTICAL |  | DISK LOADING METHOD | SPRING |  | OPENING PRESSURE SETTING | 2.5 POUNDS PER SQUARE INCH | 
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