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		                        | National Stock Number:
 4820-00-720-1407
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 007201407
 
 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:
 
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 Techincal Specification:
 
 | VALVE OPERATION METHOD | AUTOMATIC |  | MATERIAL | STEEL CORROSION RESISTING OVERALL |  | FLOW CONTROL DEVICE | BALL |  | CONNECTION TYPE | THREADED INTERNAL PIPE ALL ENDS |  | CONNECTION STYLE | PLAIN,OPTIONAL END(PIPE) ALL ENDS |  | NOMINAL PIPE SIZE ACCOMMODATED | 0.250 INCHES ALL ENDS |  | THREAD SERIES DESIGNATOR | NPT ALL ENDS |  | NOMINAL THREAD SIZE | 0.250 INCHES ALL ENDS |  | THREAD QUANTITY PER INCH | 18 ALL ENDS |  | THREAD DIRECTION | RIGHT-HAND ALL ENDS |  | BONNET TYPE | INSIDE SCREW |  | BONNET ATTACHMENT METHOD | THREADED |  | DISK LOADING METHOD | SPRING |  | OPENING PRESSURE SETTING | 3300.0 POUNDS PER SQUARE INCH |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 05188 |  | DESIGN CONTROL REFERENCE | 3102-533 | 
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