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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:
| BOLT CIRCLE NOMINAL DIAMETER | 5.125 INCHES FIRST END | | BOLT HOLE NOMINAL DIAMETER | 0.562 INCHES FIRST END | | BOLT HOLE QUANTITY | 6 FIRST END | | BONNET ATTACHMENT METHOD | BOLTED | | BONNET TYPE | OUTSIDE SCREW-YOKE | | CONNECTION TYPE | FLANGE FIRST END | | DISK LOADING METHOD | WEIGHT | | FACE TO FACE DISTANCE | 9.000 INCHES | | FEATURES PROVIDED | VALVE STEM LOCK SHIELD AND BONNET PACKING | | FLANGE FACE DESIGN | PLAIN FIRST END | | FLANGE SHAPE | ROUND WITH HOLES FIRST END | | FLOW CONTROL DEVICE | DISK | | MATERIAL | COPPER ALLOY BODY | | MATERIAL | COPPER ALLOY FLOW CONTROL DEVICE | | MATERIAL | COPPER ALLOY SEAT | | MATERIAL | NICKEL ALLOY STEM | | MOUNTING POSITION | HORIZONTAL | | NOMINAL OUTSIDE DIAMETER | 6.125 INCHES FIRST END | | NOMINAL THICKNESS | 0.250 INCHES FIRST END | | VALVE OPERATION METHOD | MANUAL | | VALVE SIZE | 2.500 INCHES | | STYLE DESIGNATOR | ANGLE FLANGED ENDS |
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