4820-01-257-1490 VALVE,CHECK Index 4820-01-257-1492 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-257-1491

Federal Supply Class:
4820

National Item Identification Number:
012571491

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:
484-8B1-209990PARKER-HANNIFIN CORPORATION
484-8B1-286768TELEDYNE INDUSTRIES INC TELEDYNE FLUID SYSTEMS REPUBLIC BUSINESS UNIT


Techincal Specification:
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION TYPETHREADED EXTERNAL BOSS FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
FLOW CONTROL DEVICEPOPPET
MATERIALCOPPER ALLOY BODY
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT
MATERIALSTEEL COMP 304 FLOW CONTROL DEVICE
MAXIMUM OPERATING TEMP200.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID, MINERAL BASE SECOND RESPONSE
MOUNTING POSITIONHORIZONTAL
NOMINAL THREAD SIZE0.750 INCHES FIRST END
NOMINAL THREAD SIZE0.375 INCHES SECOND END
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
SEAT ANGLE37.0 DEGREES FIRST END
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU
THREAD CLASS3A FIRST END
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD QUANTITY PER INCH16 FIRST END
THREAD SERIES DESIGNATORNPT SECOND END
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT (UNJ) FIRST END


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