4820-00-289-0834 VALVE,SAFETY RELIEF Index 4820-00-289-0839 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-289-0838

Federal Supply Class:
4820

National Item Identification Number:
002890838

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.


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+86.0 TO 122.0 POUNDS PER SQUARE INCH
BOLT CIRCLE NOMINAL DIAMETER3.375 INCHES 1ST END
BOLT HOLE NOMINAL DIAMETER0.562 INCHES 1ST END
BOLT HOLE QUANTITY4 1ST END
CONNECTION TYPEFLANGE 1ST END
DISK LOADING METHODSPRING
FLANGE FACE DESIGNPLAIN 1ST END
FLANGE SHAPEROUND WITH HOLES 1ST END
FLOW CONTROL DEVICEPOPPET
MATERIALCOPPER ALLOY BODY
MATERIALCOPPER ALLOY STEM
MATERIALNICKEL ALLOY SEAT
MAXIMUM OPERATING TEMP350.0 FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER4.500 INCHES 1ST END
NOMINAL THICKNESS0.437 INCHES 1ST END
SPECIAL FEATURESW/LIFTING LEVER
STYLE DESIGNATORANGLE
VALVE OPERATION METHODAUTOMATIC OR MANUAL


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