4820-00-136-2069 VALVE,SAFETY RELIEF Index 4820-01-011-3976 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-401-3974

Federal Supply Class:
4820

National Item Identification Number:
004013974

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:
CL55S51-10180064NAVAL SHIP SYSTEMS COMMAND
R6180X16497DRESSER, INC.
R6180X38056ASHCROFT INC


Techincal Specification:
BOLT CIRCLE NOMINAL DIAMETER5.875 INCHES 1ST END
BOLT CIRCLE NOMINAL DIAMETER7.125 INCHES 2ND END
BOLT HOLE NOMINAL DIAMETER0.812 INCHES 1ST END
BOLT HOLE NOMINAL DIAMETER0.812 INCHES 2ND END
BOLT HOLE QUANTITY8 1ST END
BOLT HOLE QUANTITY9 2ND END
BONNET TYPEPACKING RETAINING
CONNECTION TYPEFLANGE 2ND END
CONNECTION TYPEFLANGE 1ST END
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
FLANGE FACE DESIGNRAISED STRAIGHT 1ST END
FLANGE FACE DESIGNPLAIN 2ND END
FLANGE SHAPEROUND WITH HOLES 1ST END
FLANGE SHAPEROUND WITH HOLES 2ND END
FLOW CONTROL DEVICEDISK
NOMINAL OUTSIDE DIAMETER7.500 INCHES 1ST END
NOMINAL OUTSIDE DIAMETER8.688 INCHES 2ND END
NOMINAL THICKNESS0.875 INCHES 2ND END
NOMINAL THICKNESS1.438 INCHES 1ST END
MATERIALSTEEL BODY
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MATERIALSTEEL CORROSION RESISTING SEAT
MATERIALSTEEL CORROSION RESISTING STEM
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFERENTIATED BY THE VALVE DISCHARGE FLOW RATE REQUIREMENTAND THE RAISED FACE DIAMETER REQUIREMENT
RENEWABLE SEAT RING TYPETHREADED
RAISED FACE NOMINAL DIAMETER5.000 INCHES 1ST END
RAISED FACE NOMINAL HEIGHT0.250 INCHES 1ST END
VALVE DISCHARGE FLOW RATE58300.0 POUNDS PER HOUR
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORANGLE


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