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National Stock Number:
4820-00-202-6821
Federal Supply Class:
4820
National Item Identification Number:
002026821
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.
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Manufacturer Information:
| 3600-120 | 96169 | ELECTRIC BOAT CORPORATION | | S4824-3132363ASSYGLBSTPCHK | 80064 | NAVAL SHIP SYSTEMS COMMAND | | X1679 | 71905 | DERBYSHIRE MACHINE & TOOL CO |
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Techincal Specification:
| BONNET ATTACHMENT METHOD | BOLTED | | BONNET TYPE | INSIDE SCREW | | CONNECTION TYPE | FLANGE 1ST END | | FACE TO FACE DISTANCE | 12.500 INCHES | | FLANGE FACE DESIGN | PLAIN 1ST END | | FLANGE SHAPE | ROUND 1ST END | | FLOW CONTROL DEVICE | DISK | | MATERIAL | COPPER ALLOY 903 BODY | | MATERIAL | COPPER ALLOY 903 FLOW CONTROL DEVICE | | MATERIAL | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 STEM | | MATERIAL | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 SEAT | | MAXIMUM OPERATING PRESSURE | 500.0 POUNDS PER SQUARE INCH SINGLE RESPONSE | | MEDIA FOR WHICH DESIGNED | WATER, SALT SINGLE RESPONSE | | MOUNTING POSITION | HORIZONTAL OR VERTICAL | | NOMINAL OUTSIDE DIAMETER | 6.125 INCHES 1ST END | | NOMINAL THICKNESS | 0.938 INCHES 1ST END | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | ASDIFFERENTIATED BY ITEM NAME AND FLANGE SHAPE STYLE | | RENEWABLE SEAT RING TYPE | THREADED | | STYLE DESIGNATOR | STRAIGHT THRU FLANGED ENDS | | VALVE OPERATION METHOD | MANUAL | | VALVE SIZE | 2.500 INCHES |
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