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National Stock Number:
4820-00-862-5120
Federal Supply Class:
4820
National Item Identification Number:
008625120
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:
| 2620-902ASSYBV1IN | 63686 | THE WALWORTH COMPANY | | 2620-902ASSYBV1IN | 96169 | ELECTRIC BOAT CORPORATION | | SS845-1889587AS | 63686 | THE WALWORTH COMPANY | | SS845-1889587ASSYBV1IN | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| BONNET TYPE | PACKING RETAINING | | CONNECTION TYPE | UNTHREADED INTERNAL PIPE 1ST END | | CONNECTION STYLE | SOCKET WITH BRAZING RING (PIPE) 1ST END | | FLOW CONTROL DEVICE | DISK | | MATERIAL | COPPER ALLOY 922 BODY | | MATERIAL | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 FLOW CONTROL DEVICE | | MOUNTING POSITION | HORIZONTAL | | NOMINAL PIPE SIZE ACCOMMODATED | 1.000 INCHES 1ST END | | STYLE DESIGNATOR | STRAIGHT THRU | | VALVE OPERATION METHOD | AUTOMATIC |
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