5340-01-240-2723 COVER,ACCESS Index 4820-01-240-2725 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-240-2724

Federal Supply Class:
4820

National Item Identification Number:
012402724

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.


Manufacturer Information:
284-0290-00494756THE BOEING COMPANY
50031C2796MAIBACHINDUSTRIE-PLASTIC-GESELLSCHAF MBH
TA770-075C-075C-R08992AGM CONTAINER CONTROLS INC
MIL-V-2716681349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
END CONNECTION QUANTITY1
BODY STYLESINGLE CONNECTION, STRAIGHT FLOW
FURNISHED ITEMSGASKET AND WASHER AND NUT
FIRST END CONNECTION TYPETHREADED EXTERNAL TUBE
FIRST END STYLE DESIGNATORPLAIN
FIRST END THREAD DIRECTIONRIGHT-HAND
FIRST END THREAD CLASS2A
FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED2.050 INCHES NOMINAL
FLOW CONTROL DEVICEDISK, FLAT
MATERIALALUMINUM ALLOY BODY
MEDIA FOR WHICH DESIGNEDAIR
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 1 CLASS
OPENING PRESSURE SETTING0.3 POUNDS PER SQUARE INCH
SPECIFICATION/STANDARD DATA81349-MIL-V-27166 GOVERNMENT SPECIFICATION
VALVE RELIEF DESIGN TYPEPRESSURE AND VACUUM
VALVE VENTING DESIGN TYPEATMOSPHERIC
SURFACE TREATMENTANODIZE OUTSIDE
TEMP RATING160.0 FAHRENHEIT


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