4820-01-243-0038 VALVE,VACUUM BREAKING Index 4720-01-243-0040 HOSE,NONMETALLIC

National Stock Number:
4820-01-243-0039

Federal Supply Class:
4820

National Item Identification Number:
012430039

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:
14720-20194756THE BOEING COMPANY
14720-201-194756THE BOEING COMPANY


Techincal Specification:
FURNISHED ITEMSCAP AND CHAIN AND WASHER
PROPRIETARY CHARACTERISTICSPACS


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