4820-00-289-1517 VALVE,SAFETY RELIEF Index 4820-00-289-1521 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-289-1518

Federal Supply Class:
4820

National Item Identification Number:
002891518

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:
692-4824-11ITEM1401343ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
DD692S4824-11ITEM1453711NAVAL SEA SYSTEMS COMMAND
FF2250 3-4 28501343ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
DD692S4824-11ITEM1480064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+276.0 TO 450.0 POUNDS PER SQUARE INCH
BOLT CIRCLE NOMINAL DIAMETER2.688 INCHES SECOND END
BOLT CIRCLE NOMINAL DIAMETER3.250 INCHES FIRST END
BOLT HOLE NOMINAL DIAMETER0.562 INCHES SECOND END
BOLT HOLE NOMINAL DIAMETER0.688 INCHES FIRST END
BOLT HOLE QUANTITY4 ALL ENDS
BONNET ATTACHMENT METHODBOLTED
BONNET TYPEEXPOSED SPRING
CONNECTION TYPEFLANGE ALL ENDS
DISK LOADING METHODSPRING
FEATURES PROVIDEDVALVE STEM LOCK SHIELD
FIRST CONNECTION FACE TO CENTERLINE DISTANCE3.000 INCHES
FLANGE FACE DESIGNRAISED STRAIGHT FIRST END
FLANGE FACE DESIGNPLAIN SECOND END
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLOW CONTROL DEVICEDISK
OPERATING PRESSURE600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-872 MIL SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALNICKEL ALLOY FLOW CONTROL DEVICE
MATERIALNICKEL ALLOY SEAT
MATERIALNICKEL ALLOY STEM
MATERIALSTEEL BODY
MAXIMUM OPERATING TEMP650.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER3.812 INCHES SECOND END
NOMINAL OUTSIDE DIAMETER4.625 INCHES FIRST END
NOMINAL THICKNESS0.438 INCHES SECOND END
NOMINAL THICKNESS0.625 INCHES FIRST END
RAISED FACE NOMINAL DIAMETER2.500 INCHES FIRST END
RAISED FACE NOMINAL HEIGHT0.250 INCHES FIRST END
SECOND CONNECTION FACE TO CENTERLINE DISTANCE3.000 INCHES
VALVE OPERATION METHODAUTOMATIC OR MANUAL
VALVE SIZE0.750 INCHES
STYLE DESIGNATORANGLE FLANGED ENDS


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