4820-01-284-2176 VALVE,CHECK Index 4820-01-284-2178 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-284-2177

Federal Supply Class:
4820

National Item Identification Number:
012842177

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:
1910NC-1 AND 1900N 171T194PSI16497DRESSER, INC.


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+171.0 TO 194.0 POUNDS PER SQUARE INCH
BOLT CIRCLE NOMINAL DIAMETER7.875 INCHES SECOND END
BOLT CIRCLE NOMINAL DIAMETER9.500 INCHES FIRST END
BOLT HOLE NOMINAL DIAMETER0.875 INCHES FIRST END
BOLT HOLE NOMINAL DIAMETER0.875 INCHES SECOND END
BOLT HOLE QUANTITY8 FIRST END
BOLT HOLE QUANTITY8 SECOND END
CONNECTION TYPEFLANGE FIRST END
CONNECTION TYPEFLANGE SECOND END
FLANGE FACE DESIGNRAISED STRAIGHT FIRST END
FLANGE FACE DESIGNRAISED STRAIGHT SECOND END
FLANGE SHAPEROUND WITH HOLES FIRST END
FLANGE SHAPEROUND WITH HOLES SECOND END
FLOW CONTROL DEVICEDISK
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE
OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE
MATERIALSTEEL BODY
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDWATER, FRESH THIRD RESPONSE
NOMINAL OUTSIDE DIAMETER10.000 INCHES SECOND END
NOMINAL OUTSIDE DIAMETER11.000 INCHES FIRST END
NOMINAL THICKNESS0.688 INCHES FIRST END
NOMINAL THICKNESS1.062 INCHES SECOND END
RAISED FACE NOMINAL DIAMETER6.188 INCHES SECOND END
RAISED FACE NOMINAL DIAMETER8.500 INCHES FIRST END
RAISED FACE NOMINAL HEIGHT0.062 INCHES FIRST END
RAISED FACE NOMINAL HEIGHT0.062 INCHES SECOND END
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORANGLE FLANGED ENDS


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