4820-00-288-7280 VALVE,SAFETY RELIEF Index 4820-00-288-7288 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-288-7284

Federal Supply Class:
4820

National Item Identification Number:
002887284

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:
20138A51SS01343ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20138A51SS15187EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP
39J921PC1511660WESTINGHOUSE ELECTRIC CORP CONTROL BUSINESS UNIT
39J921PC1T01411660WESTINGHOUSE ELECTRIC CORP CONTROL BUSINESS UNIT
39J921PC1579500WESTINGHOUSE ELECTRIC CORP
39J921PC1590099NORTHROP GRUMMAN SYSTEMS CORPORATION
A660001343ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
A660015187EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP
T5599158PC1524446GENERAL ELECTRIC COMPANY
W6680762PC1524446GENERAL ELECTRIC COMPANY
W8453359PC1524446GENERAL ELECTRIC COMPANY
W8453359PC1T01424446GENERAL ELECTRIC COMPANY
39J921PC1T01479500WESTINGHOUSE ELECTRIC CORP
39J921PC1T01490099NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+5.0 TO 9.0 POUNDS PER SQUARE INCH
BOLT CIRCLE NOMINAL DIAMETER3.125 INCHES ALL ENDS
BOLT HOLE NOMINAL DIAMETER0.625 INCHES ALL ENDS
BOLT HOLE QUANTITY4 ALL ENDS
CONNECTION TYPEFLANGE ALL ENDS
DISK LOADING METHODSPRING
FIRST CONNECTION FACE TO CENTERLINE DISTANCE3.250 INCHES
FLANGE FACE DESIGNRAISED STRAIGHT ALL ENDS
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLOW CONTROL DEVICEDISK
OPERATING PRESSURE275.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIALSTEEL BODY
MAXIMUM OPERATING TEMP500.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER4.250 INCHES ALL ENDS
NOMINAL THICKNESS0.562 INCHES ALL ENDS
NOMINAL THREAD SIZE0.500 INCHES FIRST END
RAISED FACE NOMINAL DIAMETER2.500 INCHES ALL ENDS
RAISED FACE NOMINAL HEIGHT0.062 INCHES ALL ENDS
SECOND CONNECTION FACE TO CENTERLINE DISTANCE3.500 INCHES
VALVE OPERATION METHODAUTOMATIC OR MANUAL
VALVE SIZE0.500 INCHES
STYLE DESIGNATORANGLE FLANGED ENDS


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