4820-01-365-6957 VALVE,CHECK Index 4820-01-365-6959 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-365-6958

Federal Supply Class:
4820

National Item Identification Number:
013656958

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:
859T1-4TJ91816CIRCOR AEROSPACE, INC.


Techincal Specification:
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END
CONNECTION STYLEGASKET SEAL (BOSS) SECOND END
CONNECTION TYPETHREADED EXTERNAL BOSS FIRST END
CONNECTION TYPETHREADED INTERNAL BOSS SECOND END
FLOW CONTROL DEVICEPOPPET
MATERIALSTEEL COMP 316 BODY
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDACETYLENE SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDCARBON DIOXIDE THIRD RESPONSE
MEDIA FOR WHICH DESIGNEDHELIUM FOURTH RESPONSE
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID, MINERAL BASE FIFTH RESPONSE
MOUNTING POSITIONHORIZONTAL OR VERTICAL
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS
OPERATING PRESSURE600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
SEAT ANGLE37.0 DEGREES FIRST END
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU
THREAD CLASS2B SECOND END
THREAD CLASS3A FIRST END
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD SERIES DESIGNATORUNF ALL ENDS


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