4720-00-419-5837 HOSE,AIR DUCT Index 2530-00-419-5839 WHEEL ASSEMBLY,LAND

National Stock Number:
4820-00-419-5838

Federal Supply Class:
4820

National Item Identification Number:
004195838

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:
C225-781755LOCKHEED MARTIN CORPORATION
D524A4D6591816CIRCOR AEROSPACE, INC.


Techincal Specification:
CONNECTION STYLEPLAIN (TUBE) FIRST ENDPLAIN (TUBE) FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END
DISK LOADING METHODSPRINGSPRING
FLOW CONTROL DEVICEPOPPETPOPPET
OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/4,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/4,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICEQQ-A-250/4,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/4,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE SEATQQ-A-250/4,ALLOY 2024 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALALUMINUM ALLOY 2024 FLOW CONTROL DEVICEALUMINUM ALLOY 2024 SEAT
MATERIALALUMINUM ALLOY 2024 FLOW CONTROL DEVICE
MATERIALALUMINUM ALLOY 2024 SEATALUMINUM ALLOY 2024 BODY
MAXIMUM OPERATING TEMP-100.0 FAHRENHEIT FIRST RESPONSE-100.0 FAHRENHEIT FIRST RESPONSE
MAXIMUM OPERATING TEMP400.0 FAHRENHEIT SECOND RESPONSE400.0 FAHRENHEIT SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDCARBON DIOXIDE SECOND RESPONSEAIR FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDHELIUM THIRD RESPONSECARBON DIOXIDE SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDHYDROGEN FOURTH RESPONSEHELIUM THIRD RESPONSE
MEDIA FOR WHICH DESIGNEDNITROGEN, GASEOUS FIFTH RESPONSE
MEDIA FOR WHICH DESIGNEDNITROGEN, GASEOUS FIFTH RESPONSEHYDROGEN FOURTH RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END
NOMINAL THREAD SIZE0.437 INCHES FIRST END0.437 INCHES FIRST END
OPENING PRESSURE SETTING65.0 POUNDS PER SQUARE INCH
SPECIAL FEATURESFURNISHED W/DEFECTOR CAP
VALVE OPERATION METHODAUTOMATICAUTOMATIC
VALVE DISCHARGE FLOW RATE1.5 CUBIC FEET PER MINUTE1.5 CUBIC FEET PER MINUTE
STYLE DESIGNATORSTRAIGHT THRU W/BAFFLE
THREAD CLASS3A FIRST END3A FIRST END
THREAD DIRECTIONRIGHT-HAND FIRST ENDRIGHT-HAND FIRST END
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END


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