4820-01-220-5574 VALVE,PRESSURE EQUALIZING,GASEOU Index 4820-01-220-5576 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-220-5575

Federal Supply Class:
4820

National Item Identification Number:
012205575

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:
C3339 4IN90T140PSI PL419835795LESLIE CONTROLS, INC.
S1384 4IN90T14035795LESLIE CONTROLS, INC.


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 ATTACHMENT METHODBOLTED
BONNET TYPEINSIDE SCREW
CONNECTION TYPEFLANGE ALL ENDS
FIRST CONNECTION FACE TO CENTERLINE DISTANCE6.250 INCHES
FLANGE FACE DESIGNRAISED STRAIGHT ALL ENDS
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLOW CONTROL DEVICEDISK
OPENING PRESSURE SETTING300.0 POUNDS PER SQUARE INCH
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE
MATERIALSTEEL BODY
MATERIALSTEEL COMP 303 SEAT
MATERIALSTEEL COMP 303 STEM
NOMINAL OUTSIDE DIAMETER11.000 INCHES FIRST END
NOMINAL OUTSIDE DIAMETER9.000 INCHES SECOND END
NOMINAL THICKNESS0.688 INCHES SECOND END
NOMINAL THICKNESS0.812 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
SECOND CONNECTION FACE TO CENTERLINE DISTANCE6.250 INCHES
VALVE OPERATION METHODAUTOMATIC
VALVE SIZE4.000 INCHES
STYLE DESIGNATORANGLE FLANGED ENDS


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