4820-01-270-4920 VALVE,GLOBE Index 4820-01-270-4922 VALVE,CHECK

National Stock Number:
4820-01-270-4921

Federal Supply Class:
4820

National Item Identification Number:
012704921

Description:
VALVE,CHECK

Detail:
A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.


Manufacturer Information:
249T-16BB-271207BRUNSWICK CORP DEFENSE DIV
249T-16BB-291816CIRCOR AEROSPACE, INC.


Techincal Specification:
CONNECTION STYLEGASKET SEAL (BOSS) ALL ENDS
CONNECTION TYPETHREADED INTERNAL BOSS ALL ENDS
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEPOPPET
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING
MATERIALSTEEL CORROSION RESISTING BODY
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDACETYLENE SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDALCOHOL, ETHYL THIRD RESPONSE
MEDIA FOR WHICH DESIGNEDAMMONIA, GASEOUS FOURTH RESPONSE
MEDIA FOR WHICH DESIGNEDCARBON DIOXIDE FIFTH RESPONSE
MOUNTING POSITIONHORIZONTAL OR VERTICAL
NOMINAL THREAD SIZE1.312 INCHES ALL ENDS
OPENING PRESSURE SETTING2.0 POUNDS PER SQUARE INCH
SPECIAL FEATURESCRACKING PRESSURE 2 PSI
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU
THREAD CLASS3B ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD SERIES DESIGNATORUN ALL ENDS
THREAD QUANTITY PER INCH12 ALL ENDS


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