4820-00-287-2455 VALVE,SAFETY RELIEF Index 4820-00-287-2463 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-287-2462

Federal Supply Class:
4820

National Item Identification Number:
002872462

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:
BOLT CIRCLE NOMINAL DIAMETER3.937 INCHES 1ST END
BOLT HOLE NOMINAL DIAMETER0.562 INCHES 1ST END
BOLT HOLE QUANTITY6 1ST END
CONNECTION TYPEFLANGE 1ST END
DISK LOADING METHODSPRING
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
FLANGE FACE DESIGNPLAIN 1ST END
FLANGE SHAPEROUND WITH HOLES 1ST END
FLOW CONTROL DEVICEPOPPET
MATERIALBRONZE BODY
MATERIALBRONZE SEAT
MATERIALCOPPER ALLOY STEM
MAXIMUM OPERATING TEMP425.0 FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE100.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER5.062 INCHES 1ST END
NOMINAL THICKNESS0.437 INCHES 1ST END
OPENING PRESSURE SETTING2.0 POUNDS PER SQUARE INCH
SPECIAL FEATURES2 END CONNECTIONS; SECOND END RELATIONSHIP W/ FIRST END: IDENTICAL
STYLE DESIGNATORANGLE
VALVE OPERATION METHODAUTOMATIC


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