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National Stock Number:
4820-00-142-1029
Federal Supply Class:
4820
National Item Identification Number:
001421029
Description:
VALVE,STOP-LIFT-CHECK
Detail:
A VALVE WITH A STEM THAT MAY BE MECHANICALLY ACTUATED TO THREE 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. IN THE THIRD POSITION, THE VALVE DISK IS LIFTED FROM THE SEAT TO ALLOW A FLOW OF FLUID IN EITHER DIRECTION THROUGH THE VALVE. THE VALVE DISK MAY BE SPRING LOADED. SEE ALSO VALVE, LIFT-CHECK AND VALVE, STOP-CHECK.
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Manufacturer Information:
| CVL48S4803-582575ALT | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| MATERIAL | COPPER ALLOY BODY | | COPPER ALLOY FLOW CONTROL DEVICE | | COPPER ALLOY SEAT | | NICKEL ALLOY STEM | | STYLE DESIGNATOR | ANGLE FLANGED ENDS | | VALVE SIZE | 2.500 INCHES | | FACE TO FACE DISTANCE | 9.000 INCHES | | FLOW CONTROL DEVICE | DISK | | VALVE OPERATION METHOD | MANUAL | | CONNECTION TYPE | FLANGE 1ST END | | FLANGE SHAPE | ROUND WITH HOLES 1ST END | | NOMINAL OUTSIDE DIAMETER | 6.125 INCHES 1ST END | | NOMINAL THICKNESS | 0.250 INCHES 1ST END | | BOLT HOLE QUANTITY | 6 1ST END | | BOLT HOLE NOMINAL DIAMETER | 0.562 INCHES 1ST END | | BOLT CIRCLE NOMINAL DIAMETER | 5.125 INCHES 1ST END | | FLANGE FACE DESIGN | PLAIN 1ST END | | MOUNTING POSITION | HORIZONTAL | | BONNET TYPE | OUTSIDE SCREW-YOKE | | BONNET ATTACHMENT METHOD | BOLTED | | DISK LOADING METHOD | WEIGHT | | FEATURES PROVIDED | VALVE STEM LOCK SHIELD AND | | BONNET PACKING |
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