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		                             National Stock Number: 4820-00-630-9929
  Federal Supply Class: 4820
  National Item Identification Number: 006309929
  Description: VALVE,PRESSURE EQUALIZING,GASEOU
  Detail: A VALVE CONSISTING OF A SINGLE DEADWEIGHT LOADED DISK, OR TWO DEADWEIGHT LOADED DISKS EACH WITH A SEPERATE SEAT. IT IS SPECIFICALLY DESIGNED FOR THE RELIEF OF SMALL PRESSURE AND VACUUM CONDITIONS WITHIN A TANK OR OTHER CONTAINER TO OR FROM THE ATMOSPHERE. THE CENTER OF A SINGLE DEADWEIGHT LOADED DISK MAY CONTAIN A SPRING LOADED DISK FORMING AN ADDITIONAL SEAT OR APERTURE. IT MAY BE SPRING LOADED AND/OR EQUIPPED WITH A MANUAL UNLOADER ON EITHER THE PRESSURE OR VACUUM SIDE. EXCLUDE VALVE, VACUUM BREAKING.
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  Manufacturer Information:
 | 7739803 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |  | MK10029A | 13226 | BETTS INDUSTRIES, INC. |   
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  Techincal Specification:
 | DISK LOADING METHOD | SPRING |  | END CONNECTION QUANTITY | 1 |  | FIRST END CONNECTION TYPE | THREADED EXTERNAL BOSS |  | FIRST END STYLE DESIGNATOR | PLAIN |  | FIRST END THREAD DIRECTION | RIGHT-HAND |  | FIRST END THREAD CLASS | 2A |  | FLOW CONTROL DEVICE | DISK, FLAT |  | MATERIAL | ALUMINUM ALLOY BODY |  | MATERIAL | PLASTIC FLOW CONTROL DEVICE |  | MEDIA FOR WHICH DESIGNED | HYDROCARBON FUELS AND OILS |  | VALVE RELIEF DESIGN TYPE | PRESSURE AND VACUUM |  | VALVE VENTING DESIGN TYPE | ATMOSPHERIC |   
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