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National Stock Number:
4820-00-054-3790
Federal Supply Class:
4820
National Item Identification Number:
000543790
Description:
VALVE,LIFT-CHECK
Detail:
A VALVE WITH A STEM THAT MAY BE MECHANICALLY ACTUATED TO TWO DIFFERENT POSITIONS BY ROTARY OR LINEAR MOTION. IN THE FIRST 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 SECOND 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, STOP-CHECK AND VALVE, STOP-LIFT-CHECK.
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Manufacturer Information:
| 2620-911ASSY8D | 96169 | ELECTRIC BOAT CORPORATION | | 2620-911ASSY8D | 99565 | ADMIRAL VALVE LLC | | 2620-911ASSY8DL1 | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG | | SS845-1889538ASS8D | 80064 | NAVAL SHIP SYSTEMS COMMAND | | SS845-1889538ASSY8DL1 | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG |
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Techincal Specification:
| BOLT CIRCLE NOMINAL DIAMETER | 6.625 INCHES 1ST END | | BOLT HOLE NOMINAL DIAMETER | 0.875 INCHES 1ST END | | BOLT HOLE QUANTITY | 8 1ST END | | BONNET ATTACHMENT METHOD | THREADED | | BONNET TYPE | INSIDE SPRING | | CONNECTION TYPE | FLANGE 1ST END | | CRITICALITY CODE JUSTIFICATION | ZZZY | | DISK LOADING METHOD | SPRING | | FACE TO FACE DISTANCE | 4.500 INCHES | | FLANGE FACE DESIGN | RAISED STRAIGHT 1ST END | | FLANGE SHAPE | ROUND WITH HOLES 1ST END | | FLOW CONTROL DEVICE | DISK | | MOUNTING POSITION | HORIZONTAL OR VERTICAL | | NOMINAL OUTSIDE DIAMETER | 8.250 INCHES 1ST END | | NOMINAL THICKNESS | 2.250 INCHES 1ST END | | RAISED FACE NOMINAL DIAMETER | 5.000 INCHES 1ST END | | RAISED FACE NOMINAL HEIGHT | 0.250 INCHES 1ST END | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS | | STYLE DESIGNATOR | STRAIGHT THRU FLANGED ENDS | | VALVE OPERATION METHOD | AUTOMATIC | | VALVE SIZE | 3.000 INCHES |
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