4820-01-171-4390 VALVE,CHECK Index 4820-01-171-4392 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-171-4391

Federal Supply Class:
4820

National Item Identification Number:
011714391

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:
4C264099240CRISSAIR INC
4C2640-199240CRISSAIR INC
ST7M26076301THE BOEING COMPANY
ST7M260-476301THE BOEING COMPANY


Techincal Specification:
CONNECTION TYPETHREADED EXTERNAL BOSS 2ND END
CONNECTION TYPETHREADED EXTERNAL TUBE 1ST END
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) 2ND END
CONNECTION STYLEPLAIN (TUBE) 1ST END
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEPOPPET
MATERIALSTEEL CORROSION RESISTING BODY
MATERIALSTEEL FLOW CONTROL DEVICE
MAXIMUM OPERATING PRESSURE-65.0 POUNDS PER SQUARE INCH 1ST RESPONSE
MAXIMUM OPERATING PRESSURE450.0 POUNDS PER SQUARE INCH 2ND RESPONSE
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
MOUNTING POSITIONHORIZONTAL OR VERTICAL
NOMINAL THREAD SIZE0.438 INCHES 1ST END
NOMINAL THREAD SIZE0.563 INCHES 2ND END
SEAT ANGLE45.0 DEGREES 1ST END
STYLE DESIGNATORSTRAIGHT THRU
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD CLASS3A ALL ENDS
THREAD SERIES DESIGNATORUNJF 1ST END
THREAD SERIES DESIGNATORUNJS 2ND END
THREAD QUANTITY PER INCH20 2ND END
VALVE OPERATION METHODAUTOMATIC


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