4820-01-260-6923 VALVE,GATE Index 4820-01-260-6926 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-260-6924

Federal Supply Class:
4820

National Item Identification Number:
012606924

Description:
VALVE,STOP-CHECK

Detail:
A VALVE WITH A BOLT OR STEM THAT MAY BE MECHANICALLY ACTUATED TO TWO DIFFERENT POSITIONS BY ROTARY OR LINEAR MOTION. IN THE FIRST POSITION, THE VALVE DISK IS LOCATED AND LOCKED AGAINST THE SEAT PERMITTING NO FLUID FLOW THROUGH THE VALVE. IN THE SECOND POSITION, ONE SIDE OF THE VALVE DISK IS LOCATED AGAINST THE SEAT PERMITTING MOVEMENT OF THE DISK IN A MANNER THAT WILL ALLOW A FLOW OF FLUID IN ONE DIRECTION THROUGH THE VALVE. THE VALVE DISK MAY BE SPRING LOADED. IT MAY BE INLINE OR CARTRIDGE (MANIFOLD) DESIGN. SEE ALSO VALVE (1), LIFT-CHECK AND VALVE (1), STOP-LIFT-CHECK.


Manufacturer Information:
ASIB12251E1-611859HUNT VALVE COMPANY, INC.
ASIB12251E1-630263PIMA VALVE, LLC


Techincal Specification:
BOLT CIRCLE NOMINAL DIAMETER9.500 INCHES ALL ENDS
BOLT HOLE NOMINAL DIAMETER0.875 INCHES ALL ENDS
BOLT HOLE QUANTITY8 ALL ENDS
BONNET ATTACHMENT METHODBOLTED
BONNET TYPEINSIDE SCREW
CONNECTION TYPEFLANGE ALL ENDS
FACE TO FACE DISTANCE14.000 INCHES
FEATURES PROVIDEDBONNET PACKING
FLANGE FACE DESIGNPLAIN ALL ENDS
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLOW CONTROL DEVICEDISK
MATERIALCOPPER ALLOY 922 OR COPPER ALLOY 836 BODY
MATERIALCOPPER ALLOY 922 OR COPPER ALLOY 836 FLOW CONTROL DEVICE
MATERIALNICKEL ALLOY 400 OR NICKEL ALLOY SEAT
MATERIALNICKEL ALLOY 400 STEM
MAXIMUM OPERATING TEMP366.0 FAHRENHEIT SECOND RESPONSE
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
MOUNTING POSITIONHORIZONTAL
NOMINAL OUTSIDE DIAMETER11.000 INCHES ALL ENDS
NOMINAL THICKNESS0.813 INCHES ALL ENDS
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE
OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE
VALVE OPERATION METHODMANUAL
VALVE SIZE6.000 INCHES
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS
SUPPLEMENTARY FEATURESTHIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL;THE CURRENT SOURCES,30263 HAVE INDICATED THEIR PART NUMBER CONTAINED ASBESTOS PRIOR TO 1984,THEY CONTINUE TO MANUFACTURE THE SAME PART NUMBER WITHOUT ASBESTOS MATERIAL AFTER 1984


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