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:
MATERIALSTEEL COMP 316 BODY
STYLE DESIGNATORSTRAIGHT THRU
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
ACETYLENE 2ND RESPONSE
CARBON DIOXIDE 3RD RESPONSE
HELIUM 4TH RESPONSE
HYDRAULIC FLUID, MINERAL BASE 5TH RESPONSE
MAXIMUM OPERATING PRESSURE600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP275.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHODAUTOMATIC
CONNECTION TYPETHREADED EXTERNAL BOSS 1ST END
THREADED INTERNAL BOSS 2ND END
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) 1ST END
GASKET SEAL (BOSS) 2ND END
SEAT ANGLE37.0 DEGREES 1ST END
THREAD SERIES DESIGNATORUNF ALL ENDS
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS
THREAD CLASS3A 1ST END
2B 2ND END
THREAD DIRECTIONRIGHT-HAND ALL ENDS
MOUNTING POSITIONHORIZONTAL OR
VERTICAL


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