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 2ND END
BOLT CIRCLE NOMINAL DIAMETER9.500 INCHES 1ST END
BOLT HOLE NOMINAL DIAMETER0.875 INCHES 1ST END
BOLT HOLE NOMINAL DIAMETER0.875 INCHES 2ND END
BOLT HOLE QUANTITY8 1ST END
BOLT HOLE QUANTITY8 2ND END
CONNECTION TYPEFLANGE 2ND END
CONNECTION TYPEFLANGE 1ST END
FLANGE FACE DESIGNRAISED STRAIGHT 1ST END
FLANGE FACE DESIGNRAISED STRAIGHT 2ND END
FLANGE SHAPEROUND WITH HOLES 1ST END
FLANGE SHAPEROUND WITH HOLES 2ND END
FLOW CONTROL DEVICEDISK
MATERIALSTEEL BODY
MAXIMUM OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH 1ST RESPONSE
MAXIMUM OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH 2ND RESPONSE
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM 2ND RESPONSE
MEDIA FOR WHICH DESIGNEDWATER, FRESH 3RD RESPONSE
NOMINAL OUTSIDE DIAMETER10.000 INCHES 2ND END
NOMINAL OUTSIDE DIAMETER11.000 INCHES 1ST END
NOMINAL THICKNESS0.688 INCHES 1ST END
NOMINAL THICKNESS1.062 INCHES 2ND END
RAISED FACE NOMINAL DIAMETER6.188 INCHES 2ND END
RAISED FACE NOMINAL DIAMETER8.500 INCHES 1ST END
RAISED FACE NOMINAL HEIGHT0.062 INCHES 1ST END
RAISED FACE NOMINAL HEIGHT0.062 INCHES 2ND END
STYLE DESIGNATORANGLE FLANGED ENDS
VALVE OPERATION METHODAUTOMATIC


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