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		                             National Stock Number: 4820-01-033-7904
  Federal Supply Class: 4820
  National Item Identification Number: 010337904
  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:
 | 559B-1M-50 | 91816 | CIRCOR AEROSPACE, INC. |  | D-2403-41 ITEM 32 | 00026 | MMC INTERNATIONAL CORP. |  | VLV1/2NPT#3120 | 00026 | MMC INTERNATIONAL CORP. |   
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  Techincal Specification:
 | STYLE DESIGNATOR | STRAIGHT THRU |  | VALVE OPERATION METHOD | AUTOMATIC |  | MATERIAL | COPPER ALLOY OVERALL |  | FLOW CONTROL DEVICE | POPPET |  | MEDIA FOR WHICH DESIGNED | ACETYLENE 1ST RESPONSE |   | AIR 2ND RESPONSE |   | GAS, INERT 3RD RESPONSE |   | HYDROGEN 4TH RESPONSE |   | REFRIGERANT 12 5TH RESPONSE |  | MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |  | MAXIMUM OPERATING TEMP | 250.0 DEG FAHRENHEIT SINGLE RESPONSE |  | CONNECTION TYPE | THREADED EXTERNAL PIPE 1ST END |  | CONNECTION STYLE | PLAIN (PIPE) 1ST END |  | THREAD SERIES DESIGNATOR | NPT 1ST END |  | NOMINAL THREAD SIZE | 0.125 INCHES 1ST END |  | THREAD DIRECTION | RIGHT-HAND 1ST END |  | DISK LOADING METHOD | SPRING |  | OPENING PRESSURE SETTING | 50.0 POUNDS PER SQUARE INCH |   
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