5955-00-777-2905 CRYSTAL UNIT,QUARTZ Index 4820-00-777-2909 VALVE,VENT

National Stock Number:
4820-00-777-2908

Federal Supply Class:
4820

National Item Identification Number:
007772908

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:
1001162218876U S ARMY AVIATION AND MISSILE COMMAND
TA750-1001162208992AGM CONTAINER CONTROLS INC
TA750-VRH-0508992AGM CONTAINER CONTROLS INC
TA750VRH08992AGM CONTAINER CONTROLS INC


Techincal Specification:
BODY MATERIALALUMINUM ALLOY
FLOW CONTROL DEVICEDISK, DUAL
VALVE VENTING DESIGN TYPEATMOSPHERIC
BODY STYLESINGLE CONNECTION, STRAIGHT FLOW
OUTSIDE SURFACE TREATMENTANODIZED
SEAT MATERIALALUMINUM ALLOY
FLOW CONTROL DEVICE MATERIALRUBBER, SYNTHETIC
END CONNECTION QUANTITY1
FIRST END CONNECTION TYPETHREADED EXTERNAL BOSS
FIRST END STYLE DESIGNATOREXTERNAL SEAT FOR GASKET SEAL
FIRST END THREAD CLASS2A
FIRST END THREAD DIRECTIONRIGHT-HAND
MEDIA FOR WHICH DESIGNEDANY ACCEPTABLE
OPENING PRESSURE SETTING0.5 POUNDS PER SQUARE INCH
VALVE RELIEF DESIGN TYPEPRESSURE AND
VACUUM
DISK LOADING METHODSPRING
ABSOLUTE PRESSURE SETTING2.0
FURNISHED ITEMSGASKET AND
MANUAL UNLOADER ON PRESSURE SIDE AND
MANUAL UNLOADER ON VACUUM SIDE AND
NUT AND
WASHER


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