4820-00-288-6885 VALVE,SAFETY RELIEF Index 4820-00-288-6887 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-288-6886

Federal Supply Class:
4820

National Item Identification Number:
002886886

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:
R6181BH16497DRESSER, INC.


Techincal Specification:
BOLT CIRCLE NOMINAL DIAMETER2.625 INCHES SECOND END
BOLT CIRCLE NOMINAL DIAMETER5.000 INCHES FIRST END
BOLT HOLE NOMINAL DIAMETER0.562 INCHES SECOND END
BOLT HOLE NOMINAL DIAMETER0.687 INCHES FIRST END
BOLT HOLE QUANTITY4 SECOND END
BOLT HOLE QUANTITY8 FIRST END
BONNET ATTACHMENT METHODBOLTED
BONNET TYPEINSIDE SPRING
CONNECTION TYPEFLANGE SECOND END
CONNECTION TYPEFLANGE FIRST END
FIRST CONNECTION FACE TO CENTERLINE DISTANCE5.500 INCHES
FLANGE FACE DESIGNPLAIN SECOND END
FLANGE FACE DESIGNRAISED STRAIGHT FIRST END
FLANGE SHAPEROUND SECOND END
FLOW CONTROL DEVICEPOPPET
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MATERIALSTEEL CORROSION RESISTING SEAT
MATERIALSTEEL CORROSION RESISTING STEM
NOMINAL OUTSIDE DIAMETER6.500 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER7.562 INCHES SECOND END
NOMINAL THICKNESS0.812 INCHES SECOND END
NOMINAL THICKNESS1.000 INCHES FIRST END
OPERATING PRESSURE634.0 POUNDS PER SQUARE INCH (PSI) NOMINAL POWER DRIVE
RAISED FACE NOMINAL DIAMETER1.375 INCHES SECOND END
RAISED FACE NOMINAL DIAMETER4.250 INCHES FIRST END
RAISED FACE NOMINAL HEIGHT0.250 INCHES FIRST END
RAISED FACE NOMINAL HEIGHT0.250 INCHES SECOND END
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSRIGHT HAND VALVE
SECOND CONNECTION FACE TO CENTERLINE DISTANCE5.062 INCHES
VALVE OPERATION METHODAIR
VALVE SIZE2.625 INCHES
STYLE DESIGNATORANGLE FLANGED ENDS


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