4820-00-683-8721 VALVE,CHECK Index 4820-00-683-8723 VALVE,CHECK

National Stock Number:
4820-00-683-8722

Federal Supply Class:
4820

National Item Identification Number:
006838722

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:
2320B2PM91816CIRCOR AEROSPACE, INC.
2320B2PM491816CIRCOR AEROSPACE, INC.
2349B-2PM91816CIRCOR AEROSPACE, INC.


Techincal Specification:
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEPOPPET
OPERATING PRESSURE5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIALCOPPER ALLOY BODY
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT
MAXIMUM OPERATING TEMP-40.0 FAHRENHEIT FIRST RESPONSE
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDACETYLENE FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDAIR SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDAMMONIA, LIQUID FOURTH RESPONSE
MEDIA FOR WHICH DESIGNEDAMMONIA, GASEOUS THIRD RESPONSE
MEDIA FOR WHICH DESIGNEDCARBON DIOXIDE FIFTH RESPONSE
MOUNTING POSITIONHORIZONTAL
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES FIRST END
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES SECOND END
NOMINAL THREAD SIZE0.250 INCHES FIRST END
NOMINAL THREAD SIZE0.250 INCHES SECOND END
SPECIAL FEATURESCRACKING PRESSURE 2 - 4 PSI
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND END
THREAD SERIES DESIGNATORNPT FIRST END
THREAD SERIES DESIGNATORNPT SECOND END
THREAD QUANTITY PER INCH18 SECOND END
CONNECTION STYLEPLAIN, OPTIONAL END (PIPE) FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND END


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