4820-01-021-8371 VALVE,CHECK Index 4810-01-021-8373 VALVE,BUTTERFLY

National Stock Number:
4820-01-021-8372

Federal Supply Class:
4820

National Item Identification Number:
010218372

Description:
VALVE,CHECK

Detail:
A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.


Manufacturer Information:
4C2858-299240CRISSAIR INC
A15HS017-577272THE BOEING COMPANY


Techincal Specification:
CONNECTION STYLEFLARELESS SECOND END
CONNECTION STYLEFLARELESS FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEPOPPET
MATERIALALUMINUM ALLOY OVERALL
MOUNTING POSITIONHORIZONTAL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.625 INCHES FIRST END
NOMINAL THREAD SIZE0.750 INCHES SECOND END
NOMINAL THREAD SIZE0.875 INCHES FIRST END
OPERATING PRESSURE3500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
SEAT ANGLE12.0 DEGREES FIRST END
SEAT ANGLE12.0 DEGREES SECOND END
SPECIAL FEATURESTEMP RANGE 65 TO 275 F
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU
THREAD CLASS3A FIRST END
THREAD CLASS3A SECOND END
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND END
THREAD SERIES DESIGNATORUNF FIRST END
THREAD SERIES DESIGNATORUNF SECOND END


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