4820-01-340-0642 VALVE,SAFETY RELIEF Index 4820-01-340-0644 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-340-0643

Federal Supply Class:
4820

National Item Identification Number:
013400643

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:
1982C 2X2 5IN 185T 206PSI16497DRESSER, INC.
1982C 2X2.5IN.185T206PSI16497DRESSER, INC.
31508616497DRESSER, INC.


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+185.0 TO 206.0 POUNDS PER SQUARE INCH
BONNET ATTACHMENT METHODINTEGRAL
BONNET TYPEINSIDE SPRING
CONNECTION STYLEPLAIN (PIPE) FIRST END
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) SECOND END
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
CONNECTION TYPETHREADED INTERNAL PIPE SECOND END
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEDISK
MATERIALSTEEL CORROSION RESISTING BODY
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MATERIALSTEEL STEM
MAXIMUM OPERATING TEMP400.0 FAHRENHEIT SINGLE RESPONSE
NOMINAL THREAD SIZE2.000 INCHES FIRST END
NOMINAL THREAD SIZE2.500 INCHES SECOND END
OPERATING PRESSURE500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORANGLE
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD SERIES DESIGNATORNPT ALL ENDS


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