3020-00-283-9070 PULLEY,FLAT Index 2815-00-283-9072 ENGINE BLOCK ASSEMBLY,DIESEL

National Stock Number:
4820-00-283-9071

Federal Supply Class:
4820

National Item Identification Number:
002839071

Description:
VALVE,RESTRICTOR CHECK

Detail:
A VALVE HAVING AN ORIFICE IN THE POPPET, DISK, OR THE LIKE, TO PERMIT RESTRICTED FLUID FLOW WHEN THE VALVE IS SEATED. IT DOES NOT HAVE A STEM OR PROVISIONS FOR PRESSURE ADJUSTMENTS, AND IS SIMILAR TO A VALVE, CHECK WITH THE EXCEPTION OF THE ORIFICE WHICH PERMITS FLUID FLOW IN MORE THAN ONE DIRECTION.


Manufacturer Information:
R4002-311825ENGINEERED MAGNETICS INC AAP DIV
R4002-332067MARVIN ENGINEERING CO, INC


Techincal Specification:
APERTURE DIAMETER0.802 INCHES NOMINAL
CONNECTION STYLEFLARELESS FIRST END
CONNECTION STYLEFLARELESS SECOND END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEPOPPET
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATION66, AISI 303/SAE 30303 FED STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIALALUMINUM ALLOY 2024 BODY
MATERIALALUMINUM ALLOY 2024 SEAT
MATERIALSTEEL COMP 303 FLOW CONTROL DEVICE
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE
MOUNTING POSITIONHORIZONTAL
NOMINAL THREAD SIZE0.438 INCHES SECOND END
NOMINAL THREAD SIZE0.562 INCHES FIRST END
SEAT ANGLE12.0 DEGREES SECOND END
SEAT ANGLE12.0 DEGREES FIRST END
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC ALL TREATMENT RESPONSES
SURFACE TREATMENTANODIZE
THREAD CLASS3A FIRST END
THREAD CLASS3A SECOND END
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND END
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END


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