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		                        | National Stock Number:
 4820-00-815-5247
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 008155247
 
 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:
 
 | STYLE DESIGNATOR | SAFETY RELIEF |  | MATERIAL | ALUMINUM ALLOY BODY |  |  | ALUMINUM ALLOY SEAT |  | FLOW CONTROL DEVICE | DISK |  | CONNECTION TYPE | THREADED EXTERNAL TUBE 1ST END |  | CONNECTION STYLE | FLARED (TUBE) 1ST END |  | SEAT ANGLE | 37.0 DEGREES 1ST END |  | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES 1ST END |  | THREAD SERIES DESIGNATOR | UNF 1ST END |  | NOMINAL THREAD SIZE | 0.437 INCHES 1ST END |  | THREAD QUANTITY PER INCH | 20 1ST END |  | THREAD CLASS | 3A 1ST END |  | THREAD DIRECTION | RIGHT-HAND 1ST END |  | DISK LOADING METHOD | SPRING |  | OPENING PRESSURE SETTING | 23.0 POUNDS PER SQUARE INCH |  | FEATURES PROVIDED | PRESSURE TIGHT OUTLET SIDE |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 99221 |  | DESIGN CONTROL REFERENCE | 2394281 | 
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