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 HOLE NOMINAL DIAMETER0.750 INCHES 2ND END
BOLT HOLE NOMINAL DIAMETER0.875 INCHES 1ST END
BOLT HOLE QUANTITY8 ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER7.500 INCHES 2ND END
BOLT CIRCLE NOMINAL DIAMETER9.500 INCHES 1ST END
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
MATERIALSTEEL BODY
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MATERIALSTEEL CORROSION RESISTING SEAT
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE285.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER9.000 INCHES 2ND END
NOMINAL OUTSIDE DIAMETER11.000 INCHES 1ST END
NOMINAL THICKNESS0.812 INCHES 2ND END
NOMINAL THICKNESS1.000 INCHES 1ST END
OPENING PRESSURE SETTING170.0 POUNDS PER SQUARE INCH
RAISED FACE NOMINAL DIAMETER6.188 INCHES 2ND END
RAISED FACE NOMINAL DIAMETER8.500 INCHES 1ST END
RAISED FACE NOMINAL HEIGHT0.062 INCHES ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS NOTE:TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
VALVE OPERATION METHODAUTOMATIC
VALVE SIZE4.000 INCHES


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