4820-00-198-6524 VALVE,SAFETY RELIEF Index 4820-00-980-2376 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-202-8380

Federal Supply Class:
4820

National Item Identification Number:
002028380

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.


Manufacturer Information:
2-2850-7645681PARKER-HANNIFIN CORPORATION
2-2850-7692003PARKER HANNIFIN CORPORATION DIV AEROSPACE GROUP HEADQUARTERS


Techincal Specification:
CONNECTION STYLEGASKET SEAL(BOSS) FIRST END
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
DISK LOADING METHODSPRING
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
MATERIALALUMINUM ALLOY BODY
MATERIALALUMINUM ALLOY BODY LINING
MATERIALALUMINUM ALLOY SEAT
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES SECOND END
NOMINAL THREAD SIZE0.437 INCHES FIRST END
NOMINAL THREAD SIZE0.438 INCHES SECOND END
OPENING PRESSURE SETTING50.0 POUNDS PER SQUARE INCH
SEAT ANGLE37.0 DEGREES SECOND END
SEAT ANGLE60.0 DEGREES FIRST END
VALVE DISCHARGE FLOW RATE32.9 CUBIC METERS PER MINUTE
STYLE DESIGNATORANGLE
SURFACE TREATMENTANODIZE LOCATION NOT OTHERWISE SPECIFIED
THREAD CLASS3A SECOND END
THREAD CLASS3B FIRST END
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND END
THREAD QUANTITY PER INCH20 FIRST END
THREAD QUANTITY PER INCH20 SECOND END
THREAD SERIES DESIGNATORUNF SECOND END
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END


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