4820-00-446-3537 VALVE,SAFETY RELIEF Index 4820-00-446-3550 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-446-3543

Federal Supply Class:
4820

National Item Identification Number:
004463543

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:
111032311660WESTINGHOUSE ELECTRIC CORP CONTROL BUSINESS UNIT
111032379500WESTINGHOUSE ELECTRIC CORP
26J535PC1T02311660WESTINGHOUSE ELECTRIC CORP CONTROL BUSINESS UNIT
26J539PC5211660WESTINGHOUSE ELECTRIC CORP CONTROL BUSINESS UNIT
26J539PC5279500WESTINGHOUSE ELECTRIC CORP
26J535PC1T02379500WESTINGHOUSE ELECTRIC CORP
26J610PC1T02311660WESTINGHOUSE ELECTRIC CORP CONTROL BUSINESS UNIT
27J409PC1T02311660WESTINGHOUSE ELECTRIC CORP CONTROL BUSINESS UNIT
27J409PC1T02379500WESTINGHOUSE ELECTRIC CORP
26J610PC1T02379500WESTINGHOUSE ELECTRIC CORP


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+7.0 TO 25.0 POUNDS PER SQUARE INCH+7.0 TO 25.0 POUNDS PER SQUARE INCH
BOLT CIRCLE NOMINAL DIAMETER3.125 INCHES SECOND END
BOLT HOLE NOMINAL DIAMETER0.562 INCHES SECOND END
BOLT HOLE QUANTITY4 SECOND END4 SECOND END
BONNET TYPEINSIDE SPRINGINSIDE SPRING
BONNET ATTACHMENT METHODTHREADEDTHREADED
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) FIRST ENDPLAIN,OPTIONAL END(PIPE) FIRST END
CONNECTION TYPEFLANGE SECOND ENDFLANGE SECOND END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST ENDTHREADED INTERNAL PIPE FIRST END
DISK LOADING METHODSPRINGSPRING
FIRST CONNECTION FACE TO CENTERLINE DISTANCE3.000 INCHES
FLANGE FACE DESIGNPLAIN SECOND END
FLANGE SHAPEROUND WITH HOLES SECOND ENDROUND WITH HOLES SECOND END
FLOW CONTROL DEVICEDISKDISK
MATERIALNICKEL ALLOY FLOW CONTROL DEVICENICKEL ALLOY SEAT
MATERIALNICKEL ALLOY SEATCOPPER ALLOY BODY
MATERIALNICKEL ALLOY STEM
MATERIALNICKEL ALLOY STEMNICKEL ALLOY FLOW CONTROL DEVICE
MAXIMUM OPERATING TEMP425.0 FAHRENHEIT SINGLE RESPONSE425.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER4.250 INCHES SECOND END
NOMINAL THICKNESS0.438 INCHES SECOND END
NOMINAL PIPE SIZE ACCOMMODATED1.250 INCHES FIRST END1.250 INCHES FIRST END
NOMINAL THREAD SIZE1.250 INCHES FIRST END1.250 INCHES FIRST END
OPERATING PRESSURE100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
SECOND CONNECTION FACE TO CENTERLINE DISTANCE1.906 INCHES
VALVE OPERATION METHODAUTOMATIC OR AUTOMATIC OR MANUALMANUAL
VALVE SIZE1.000 INCHES1.000 INCHES
STYLE DESIGNATORANGLE FLANGED ENDS
THREAD DIRECTIONRIGHT-HAND FIRST ENDRIGHT-HAND FIRST END
THREAD SERIES DESIGNATORNPT FIRST END


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