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National Stock Number:
4820-00-971-3494
Federal Supply Class:
4820
National Item Identification Number:
009713494
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:
| 128N10000-3 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 128N10000-3 | 79RG9 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| BONNET TYPE | PACKING RETAINING | | CONNECTION STYLE | GASKET SEAL (BOSS) 1ST END | | CONNECTION TYPE | THREADED INTERNAL BOSS 1ST END | | DISK LOADING METHOD | SPRING | | FLOW CONTROL DEVICE | POPPET | | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.437 INCHES 1ST END | | NOMINAL THREAD SIZE | 0.437 INCHES 1ST END | | RENEWABLE SEAT RING TYPE | PRESSED-IN | | STYLE DESIGNATOR | OFFSET | | THREAD CLASS | 3B 1ST END | | THREAD DIRECTION | RIGHT-HAND 1ST END | | THREAD SERIES DESIGNATOR | UNF 1ST END | | VALVE OPERATION METHOD | AUTOMATIC |
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