4820-00-922-8421 VALVE,STOP-CHECK Index 4820-00-922-8423 VALVE,STOP-CHECK

National Stock Number:
4820-00-922-8422

Federal Supply Class:
4820

National Item Identification Number:
009228422

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:
2620-90296169ELECTRIC BOAT CORPORATION
2620-902ASSYE1/2IN96169ELECTRIC BOAT CORPORATION
2620-902ASSYE1/2INL103950NAVAL INVENTORY CONTROL POINT MECHANICSBURG
2620-902L103950NAVAL INVENTORY CONTROL POINT MECHANICSBURG
845-1889587ASSYE1/2INL103950NAVAL INVENTORY CONTROL POINT MECHANICSBURG
845-1889587ASSYE1/2IN96169ELECTRIC BOAT CORPORATION


Techincal Specification:
MATERIALCOPPER ALLOY 922 BODY
NICKEL ALLOY 400 OR
NICKEL ALLOY R-405 STEM
STYLE DESIGNATORSTRAIGHT THRU
FLOW CONTROL DEVICEDISK
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE700.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP150.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHODMANUAL
CONNECTION TYPEUNTHREADED INTERNAL PIPE 1ST END
CONNECTION STYLESOCKET WITH BRAZING RING (PIPE) 1ST END
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES 1ST END
MOUNTING POSITIONHORIZONTAL
RENEWABLE SEAT RING TYPETHREADED
BONNET TYPEINSIDE SCREW
BONNET ATTACHMENT METHODUNION
FEATURES PROVIDEDBONNET PACKING
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
CRITICALITY CODE JUSTIFICATIONZZZY
THE MANUFACTURERS DATA
MANUFACTURERS CODE96169
DESIGN CONTROL REFERENCE2620-902


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