4820-00-289-1389 VALVE,REGULATING,FLUID PRESSURE Index 4820-00-289-1401 VALVE,ANGLE

National Stock Number:
4820-00-289-1397

Federal Supply Class:
4820

National Item Identification Number:
002891397

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.


Techincal Specification:
BOLT CIRCLE NOMINAL DIAMETER6.625 INCHES 1ST END
BOLT HOLE NOMINAL DIAMETER0.812 INCHES 1ST END
BOLT HOLE QUANTITY8 1ST END
BONNET TYPEOUTSIDE SCREW-YOKE
BONNET ATTACHMENT METHODBOLTED
CONNECTION TYPEFLANGE 1ST END
FEATURES PROVIDEDBONNET PACKING
FIRST CONNECTION FACE TO CENTERLINE DISTANCE7.000 INCHES
FLANGE FACE DESIGNRAISED STRAIGHT 1ST END
FLANGE SHAPEROUND WITH HOLES 1ST END
FLOW CONTROL DEVICEDISK
MATERIALCOBALT ALLOY SEAT
MATERIALCOBALT ALLOY FLOW CONTROL DEVICE
MATERIALSTEEL BODY
MATERIALSTEEL CORROSION RESISTING STEM
MAXIMUM OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP850.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
MOUNTING POSITIONHORIZONTAL OR VERTICAL
NOMINAL OUTSIDE DIAMETER8.250 INCHES 1ST END
NOMINAL THICKNESS1.250 INCHES 1ST END
RAISED FACE NOMINAL DIAMETER5.750 INCHES 1ST END
RAISED FACE NOMINAL HEIGHT0.250 INCHES 1ST END
RENEWABLE SEAT RING TYPETHREADED
SECOND CONNECTION FACE TO CENTERLINE DISTANCE7.000 INCHES
SPECIAL FEATURESDRAIN CONNECTION ABOVE SEAT
STYLE DESIGNATORANGLE FLANGED ENDS
VALVE SIZE3.000 INCHES
VALVE OPERATION METHODMANUAL


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