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		                        | National Stock Number:
 4820-00-460-6805
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 004606805
 
 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:
 
 | 066161 | 33781 | TUTHILL CORPORATION DBA TUTHILL VAC & BLOWER SYSTEMS DIV TUTHILL VACUUM SYSTEMS | 
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 Techincal Specification:
 
 | DISK LOADING METHOD | SPRING AND WEIGHT |  | END CONNECTION QUANTITY | 1 |  | BODY MATERIAL | STEEL, CORROSION RESISTING |  | BODY STYLE | SINGLE CONNECTION, STRAIGHT FLOW |  | FIRST END CONNECTION TYPE | THREADED EXTERNAL PIPE |  | FIRST END NOMINAL PIPE SIZE ACCOMMODATED | 1.500 INCHES |  | FIRST END THREAD DIRECTION | RIGHT-HAND |  | FIRST END THREAD CLASS | 3A |  | FIRST END STYLE DESIGNATOR | PLAIN |  | FLOW CONTROL DEVICE | DISK, FLAT |  | PROPRIETARY CHARACTERISTICS | PACS |  | MEDIA FOR WHICH DESIGNED | AIR | 
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