4820-01-331-8682 VALVE,SAFETY RELIEF Index 4820-01-331-8684 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-331-8683

Federal Supply Class:
4820

National Item Identification Number:
013318683

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:
1905-30FC-1 S/N TH72190-19316497DRESSER, INC.


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+15.0 TO 20.0 POUNDS PER SQUARE INCH
BOLT HOLE NOMINAL DIAMETER0.625 INCHES 2ND END
BOLT HOLE NOMINAL DIAMETER0.750 INCHES 1ST END
BOLT HOLE QUANTITY4 ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER3.875 INCHES 2ND END
BOLT CIRCLE NOMINAL DIAMETER4.750 INCHES 1ST END
CONNECTION TYPEFLANGE ALL ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE4.750 INCHES
FLANGE FACE DESIGNRAISED STRAIGHT ALL ENDS
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLOW CONTROL DEVICEDISK
MATERIALSTEEL BODY
MATERIALSTEEL COMP 316 FLOW CONTROL DEVICE
MAXIMUM OPERATING TEMP100.0 FAHRENHEIT 1ST RESPONSE
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT 2ND RESPONSE
MAXIMUM OPERATING PRESSURE185.0 POUNDS PER SQUARE INCH 2ND RESPONSE
MAXIMUM OPERATING PRESSURE285.0 POUNDS PER SQUARE INCH 1ST RESPONSE
NOMINAL OUTSIDE DIAMETER5.000 INCHES 2ND END
NOMINAL OUTSIDE DIAMETER6.000 INCHES 1ST END
NOMINAL THICKNESS0.688 INCHES 2ND END
NOMINAL THICKNESS0.750 INCHES 1ST END
RAISED FACE NOMINAL DIAMETER2.750 INCHES 2ND END
RAISED FACE NOMINAL DIAMETER3.250 INCHES 1ST END
RAISED FACE NOMINAL HEIGHT0.062 INCHES ALL ENDS
SECOND CONNECTION FACE TO CENTERLINE DISTANCE4.875 INCHES
STYLE DESIGNATORANGLE FLANGED ENDS
VALVE OPERATION METHODAUTOMATIC
VALVE SIZE1.500 INCHES


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