8140-01-078-4787 BOX,PACKING,AMMUNITION Index 4820-01-078-4789 VALVE,PRESSURE EQUALIZING,GASEOU

National Stock Number:
4820-01-078-4788

Federal Supply Class:
4820

National Item Identification Number:
010784788

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:
185333203956NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
END CONNECTION QUANTITY2
BODY STYLESTRAIGHT THRU
FIRST END CONNECTION TYPETHREADED EXTERNAL TUBE
FIRST END STYLE DESIGNATORFLARED
FIRST END NOMINAL THREAD SIZE0.625 INCHES
FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES NOMINAL
FIRST END THREAD DIRECTIONRIGHT-HAND
FIRST END THREAD PITCH DIAMETERS+0.5976 TO 0.5978 INCHES
FIRST END THREAD SERIES DESIGNATORUNEF
FIRST END THREAD TOLERANCE CLASS3A EXTERNAL
FLOW CONTROL DEVICENEEDLE
MATERIALSTEEL BODY
MAXIMUM OPERATING PRESSURE45.0 POUNDS PER SQUARE INCH
MEDIA FOR WHICH DESIGNEDGAS
SECOND END CONNECTION TYPEUNTHREADED INTERNAL HOSE
SECOND END INSIDE DIAMETER HOSE ACCOMMODATED0.250 INCHES NOMINAL
SECOND END OUTSIDE DIAMETER HOSE ACCOMMODATED0.250 INCHES MINIMUM AND 0.437 INCHES MAXIMUM
SECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
SECOND END STYLE DESIGNATORHOSE SOCKET
VALVE RELIEF DESIGN TYPEPRESSURE AND VACUUM
VALVE VENTING DESIGN TYPEATMOSPHERIC


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