4820-00-393-4142 VALVE,CHECK Index 4820-00-393-4144 VALVE,FLOW CONTROL

National Stock Number:
4820-00-393-4143

Federal Supply Class:
4820

National Item Identification Number:
003934143

Description:
VALVE,SAFETY RELIEF

Detail:
A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.


Manufacturer Information:
620B-9-10-1109990PARKER-HANNIFIN CORPORATION
620B-9-10-1172352CURTISS-WRIGHT FLOW CONTROL CORPORATION
909711C255820RTX CORPORATION
620B9-10-1186768TELEDYNE INDUSTRIES INC TELEDYNE FLUID SYSTEMS REPUBLIC BUSINESS UNIT


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+1200.0 TO 1300.0 POUNDS PER SQUARE INCH
BONNET ATTACHMENT METHODINTEGRAL
BONNET TYPEINSIDE SPRING
CONNECTION STYLEGASKET SEAL(BOSS) FIRST END
CONNECTION TYPETHREADED INTERNAL BOSS FIRST END
DISK LOADING METHODSPRING
FEATURES PROVIDEDBONNET PACKING AND PRESSURE TIGHT OUTLET SIDE
FLOW CONTROL DEVICEPOPPET
OPERATING PRESSURE3100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
NOMINAL THREAD SIZE0.875 INCHES FIRST END
VALVE OPERATION METHODAUTOMATIC
VALVE DISCHARGE FLOW RATE10.0 GALLONS PER MINUTE
STYLE DESIGNATORANGLE
SURFACE TREATMENTPASSIVATE LOCATION NOT OTHERWISE SPECIFIED
THREAD CLASS3B FIRST END
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
THREAD QUANTITY PER INCH14 FIRST END


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