4820-01-299-8434 VALVE,CHECK Index 4820-01-299-8436 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-299-8435

Federal Supply Class:
4820

National Item Identification Number:
012998435

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:
16971-F REV B72352CURTISS-WRIGHT FLOW CONTROL CORPORATION
26PA11-17072352CURTISS-WRIGHT FLOW CONTROL CORPORATION


Techincal Specification:
BOLT CIRCLE NOMINAL DIAMETER7.500 INCHES SECOND END
BOLT CIRCLE NOMINAL DIAMETER9.500 INCHES FIRST END
BOLT HOLE NOMINAL DIAMETER0.750 INCHES SECOND END
BOLT HOLE NOMINAL DIAMETER0.875 INCHES FIRST END
BOLT HOLE QUANTITY8 ALL ENDS
BONNET TYPEPACKING RETAINING
CONNECTION TYPEFLANGE ALL ENDS
DISK LOADING METHODSPRING
FLANGE FACE DESIGNRAISED STRAIGHT ALL ENDS
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLOW CONTROL DEVICEDISK
OPENING PRESSURE SETTING170.0 POUNDS PER SQUARE INCH
OPERATING PRESSURE285.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIALSTEEL BODY
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MATERIALSTEEL CORROSION RESISTING SEAT
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER11.000 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER9.000 INCHES SECOND END
NOMINAL THICKNESS0.812 INCHES SECOND END
NOMINAL THICKNESS1.000 INCHES FIRST END
RAISED FACE NOMINAL DIAMETER6.188 INCHES SECOND END
RAISED FACE NOMINAL DIAMETER8.500 INCHES FIRST END
RAISED FACE NOMINAL HEIGHT0.062 INCHES ALL ENDS
VALVE OPERATION METHODAUTOMATIC
VALVE SIZE4.000 INCHES
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS NOTE:TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.


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