2940-00-328-8229 GASKET Index 4820-00-328-8241 VALVE,DRAIN

National Stock Number:
4820-00-328-8236

Federal Supply Class:
4820

National Item Identification Number:
003288236

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:
4R121-11782829ALLEN AIRCRAFT PRODUCTS INC
749831-11798897LOCKHEED MARTIN CORP


Techincal Specification:
APERTURE DIAMETER0.024 INCHES NOMINAL0.024 INCHES NOMINAL
CONNECTION STYLEFLARELESS SECOND ENDFLARELESS SECOND END
CONNECTION STYLEFLARELESS FIRST ENDFLARELESS FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND ENDTHREADED EXTERNAL TUBE SECOND END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END
DISK LOADING METHODSPRINGSPRING
FLOW CONTROL DEVICEPOPPETPOPPET
MATERIALSTEEL CORROSION RESISTING OVERALL
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT SINGLE RESPONSE275.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
MOUNTING POSITIONHORIZONTAL OR HORIZONTAL OR VERTICALVERTICAL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES SECOND END0.375 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES SECOND END
NOMINAL THREAD SIZE0.562 INCHES FIRST END0.562 INCHES FIRST END
NOMINAL THREAD SIZE0.562 INCHES SECOND END0.562 INCHES SECOND END
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
SEAT ANGLE12.0 DEGREES SECOND END
SEAT ANGLE12.0 DEGREES SECOND END12.0 DEGREES FIRST END
VALVE OPERATION METHODAUTOMATICAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU
SURFACE TREATMENTPASSIVATE
THREAD CLASS3A FIRST END3A FIRST END
THREAD CLASS3A SECOND END3A SECOND END
THREAD DIRECTIONRIGHT-HAND FIRST ENDRIGHT-HAND FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND ENDRIGHT-HAND SECOND END
THREAD QUANTITY PER INCH18 FIRST END18 FIRST END
THREAD SERIES DESIGNATORUNF SECOND END
THREAD SERIES DESIGNATORUNF SECOND ENDUNF FIRST END


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