4820-01-268-5997 VALVE,GATE Index 4820-01-268-5999 VALVE,SAFETY RELIEF

National Stock Number:
4810-01-268-5998

Federal Supply Class:
4810

National Item Identification Number:
012685998

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:
B14251E-040011859HUNT VALVE COMPANY, INC.
B14251E-040030263PIMA VALVE, LLC


Techincal Specification:
MATERIALCOPPER ALLOY BODY
NICKEL ALLOY FLOW CONTROL DEVICE
NICKEL ALLOY SEAT
NICKEL ALLOY STEM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY
ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE SEAT
QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE STEM
STYLE DESIGNATORANGLE FLANGED ENDS
VALVE SIZE4.000 INCHES
FIRST CONNECTION FACE TO CENTERLINE DISTANCE5.500 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE5.500 INCHES
FLOW CONTROL DEVICEDISK
MAXIMUM OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
VALVE OPERATION METHODMANUAL
CONNECTION TYPEFLANGE ALL ENDS
FLANGE SHAPEROUND WITH HOLES ALL ENDS
NOMINAL OUTSIDE DIAMETER9.000 INCHES ALL ENDS
NOMINAL THICKNESS0.688 INCHES ALL ENDS
BOLT HOLE QUANTITY8 ALL ENDS
BOLT HOLE NOMINAL DIAMETER0.750 INCHES ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER7.500 INCHES ALL ENDS
FLANGE FACE DESIGNPLAIN ALL ENDS
MOUNTING POSITIONVERTICAL
BONNET TYPEOUTSIDE SCREW-YOKE
BONNET ATTACHMENT METHODBOLTED
SUPPLEMENTARY FEATURESTHIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL. THE CURRENT APPROVED SOURCE, 30263, HAS 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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