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		                             National Stock Number: 4820-00-402-9637
  Federal Supply Class: 4820
  National Item Identification Number: 004029637
  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:
 | 621B-3-3/4-15 | 09990 | PARKER-HANNIFIN CORPORATION |  | 621B-3-3/4-15 | 86768 | TELEDYNE INDUSTRIES INC TELEDYNE FLUID SYSTEMS REPUBLIC BUSINESS UNIT |   
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  Techincal Specification:
 | STYLE DESIGNATOR | ANGLE |  | VALVE OPERATION METHOD | AUTOMATIC |  | MATERIAL | ALUMINUM ALLOY BODY |   | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |  | SURFACE TREATMENT | ANODIZE |  | FLOW CONTROL DEVICE | POPPET |  | MAXIMUM OPERATING PRESSURE | 3600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |  | MAXIMUM OPERATING TEMP | 225.0 DEG FAHRENHEIT SINGLE RESPONSE |  | CONNECTION TYPE | THREADED INTERNAL PIPE 1ST END |   | THREADED EXTERNAL PIPE 2ND END |  | CONNECTION STYLE | PLAIN,OPTIONAL END(PIPE) 1ST END |   | PLAIN (PIPE) 2ND END |  | THREAD SERIES DESIGNATOR | NPT 1ST END |   | NPT 2ND END |  | NOMINAL THREAD SIZE | 0.750 INCHES 1ST END |   | 0.750 INCHES 2ND END |  | THREAD DIRECTION | RIGHT-HAND 1ST END |   | RIGHT-HAND 2ND END |  | DISK LOADING METHOD | SPRING |  | ADJUSTABLE PRESSURE RANGE | 40.0 TO 125.0 POUNDS PER SQUARE INCH |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 09990 |  | DESIGN CONTROL REFERENCE | 621B-3-3/4-15 |   
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