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National Stock Number:
4820-00-057-1885
Federal Supply Class:
4820
National Item Identification Number:
000571885
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:
| 12980-4 | 99643 | EATON AEROSPACE LLC | | 3C94063-102 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| CONNECTION STYLE | PLAIN, OPTIONAL END (PIPE) FIRST END | | OPERATING PRESSURE | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE | | MATERIAL | ALUMINUM ALLOY BODY | | MATERIAL | STEEL CORROSION RESISTING SEAT | | MEDIA FOR WHICH DESIGNED | HYDRAULIC FLUID, PHOSPHATE-ESTER BASE SINGLE RESPONSE | | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.750 INCHES FIRST END | | NOMINAL THREAD SIZE | 1.500 INCHES FIRST END | | STYLE DESIGNATOR | STRAIGHT THRU | | THREAD CLASS | 3B FIRST END | | THREAD DIRECTION | RIGHT-HAND FIRST END | | THREAD SERIES DESIGNATOR | UN FIRST END | | THREAD QUANTITY PER INCH | 12 FIRST END |
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