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:
MATERIALCOPPER ALLOY BODY
STEEL COMP 304 FLOW CONTROL DEVICE
RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT
STYLE DESIGNATORSTRAIGHT THRU
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
HYDRAULIC FLUID, MINERAL BASE 2ND RESPONSE
MAXIMUM OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP200.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHODAUTOMATIC
CONNECTION TYPETHREADED EXTERNAL BOSS 1ST END
THREADED EXTERNAL PIPE 2ND END
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) 1ST END
PLAIN (PIPE) 2ND END
SEAT ANGLE37.0 DEGREES 1ST END
THREAD SERIES DESIGNATORUNJ 1ST END
NPT 2ND END
NOMINAL THREAD SIZE0.750 INCHES 1ST END
0.375 INCHES 2ND END
THREAD QUANTITY PER INCH16 1ST END
THREAD CLASS3A 1ST END
THREAD DIRECTIONRIGHT-HAND ALL ENDS
MOUNTING POSITIONHORIZONTAL


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