7644-01-452-6049 DIGITAL GEOSPATIAL PRODUCTS Index 3110-01-452-6051 BALL,BEARING

National Stock Number:
4520-01-452-6050

Federal Supply Class:
4520

National Item Identification Number:
014526050

Description:
DRAFT CONTROL,FLUE,AUTOMATIC

Detail:
AN ITEM CONSISTING OF A METAL FRAME IN WHICH IS INSERTED A FLAT METAL PLATE MOUNTED ON A SHAFT. THE PLATE, FLUCTUATING AUTOMATICALLY ACCORDING TO CHANGES IN ATMOSPHERIC PRESSURE, CONTROLS THE STACK OR FLUE DRAFT AND MAINTAINS AN ABSOLUTE CONSTANCY OF DRAFT REGARDLESS OF VARYING WEATHER CONDITIONS.


Manufacturer Information:
197A168-103640LOCKHEED MARTIN CORPORATION


Techincal Specification:
OVERALL HEIGHT17.068 INCHES NOMINAL
OVERALL LENGTH21.500 INCHES NOMINAL
OVERALL WIDTH11.370 INCHES NOMINAL
MATERIALALUMINUM ALLOY
SPECIAL FEATURESMATERIAL ALUMINUM ALLOY QQ-A-25018, 5052-H32; PRIME PER MIL-C-22750; PAINT USING FED-STD-595, COLOR NO. 26307, LIGHT GULL GRAY, MIL-C-83286 TY 1; HOLES TO BE FREE OF PAINT AND PRIMER
SURFACE TREATMENTPRIMER AND PAINT


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