4320-00-398-6931 IMPELLER,PUMP,CENTRIFUGAL Index 3130-00-398-6934 HOUSING,BEARING UNIT

National Stock Number:
4320-00-398-6933

Federal Supply Class:
4320

National Item Identification Number:
003986933

Description:
RING,WEARING

Detail:
A cylindrical item with or without flange(s), designed to be inserted in a pump casing or secured to the impeller of a centrifugal pump. It is used for the purpose of providing a close running clearance between the impeller and casing in order to prevent or overcome leakage due to erosion. It may also be used as a diffuser ring in the suction and discharge throats of valves.


Manufacturer Information:
H4320-398-693312004NAVAL SEA SYSTEMS COMMAND LOGISTICS SUPPORT ENGINEERING ACTIVITY
H583EX216712SIEMENS ENERGY, INC.


Techincal Specification:
BODY INSIDE DIAMETER3.437 INCHES NOMINAL
BODY OUTSIDE DIAMETER3.875 INCHES NOMINAL
BODY STYLEINTERNAL AND EXTERNAL FLANGE
CENTER FLANGE THICKNESS0.248 INCHES NOMINAL
CORNER SHAPEROUND INSIDE RIGHT CORNER
CORNER SHAPESQUARE INSIDE LEFT CORNER
CORNER SHAPESQUARE OUTSIDE RIGHT CORNER
CORNER SHAPESQUARE OUTSIDE LEFT CORNER
END TO FLANGE DISTANCE0.343 INCHES NOMINAL
FLANGE DIAMETER4.188 INCHES NOMINAL
INTERNAL FLANGE INSIDE DIAMETER2.750 INCHES NOMINAL
INTERNAL FLANGE LIP WIDTH0.250 INCHES NOMINAL
INTERNAL FLANGE OUTSIDE DIAMETER3.167 INCHES NOMINAL
INTERNAL FLANGE WIDTH0.468 INCHES NOMINAL
OVERALL LENGTH0.843 INCHES NOMINAL
MATERIALNICKEL ALLOY
SPECIAL FEATURES0.062 IN. W BY 0.015 IN. DEEP GROOVES ON OD ABUTING FLANGE
POSITIONING LUG LENGTH0.156 INCHES NOMINAL
POSITIONING LUG WIDTH0.438 INCHES NOMINAL
SURFACE FINISH63.0 MICROINCHES COUNTERBORE
SURFACE FINISH63.0 MICROINCHES INSIDE
SURFACE FINISH63.0 MICROINCHES OUTSIDE


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