4810-01-458-0419 SEAT,VALVE Index 4820-01-458-0421 FLANGE,GLAND,VALVE

National Stock Number:
4820-01-458-0420

Federal Supply Class:
4820

National Item Identification Number:
014580420

Description:
VALVE,Y

Detail:
A VALVE WITH ONE INLET AND ONE OUTLET CONNECTION THAT PROVIDES UNOBSTRUCTED FLUID FLOW. THE FLOW IS CONTROLLED BY THE ACTION OF A STEM WHICH LIFTS DISK PERPENDICULARLY OFF CENTER AXIS OF ITS SEAT. THE STEM IS AT ANGLE OF LESS THAN 90 DEGREES (1.5708 RADIANS) TO PARALLEL INLET AND OUTLET FLOW. IT MAY UTILIZE A DIAPHRAGM AS PACKING. EXCLUDES VALVE, STOP-CHECK.


Manufacturer Information:
138562380064NAVAL SHIP SYSTEMS COMMAND
803-1385623-046180064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
BOLT CIRCLE NOMINAL DIAMETER6.562 INCHES ALL ENDS
BOLT HOLE NOMINAL DIAMETER0.625 INCHES ALL ENDS
BOLT HOLE QUANTITY4 ALL ENDS
BONNET ATTACHMENT METHODBOLTED
BONNET TYPEINSIDE SCREW
CONNECTION TYPEFLANGE ALL ENDS
FURNISHED ITEMS AND QUANTITY1 HANDWHEEL
FACE TO FACE DISTANCE12.500 INCHES
FLANGE FACE DESIGNPLAIN ALL ENDS
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLOW CONTROL DEVICEDISK
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B61 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALBRONZE OVERALL
MAXIMUM OPERATING PRESSURE250.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER7.688 INCHES ALL ENDS
NOMINAL THICKNESS1.000 INCHES ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU Y-PATTERN FLANGED ENDS
VALVE OPERATION METHODMANUAL
VALVE SIZE4.000 INCHES


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