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
BOLT HOLE NOMINAL DIAMETER0.562 INCHES 2ND END
BOLT HOLE QUANTITY4 2ND END
BOLT CIRCLE NOMINAL DIAMETER3.125 INCHES 2ND END
BONNET ATTACHMENT METHODTHREADED
BONNET TYPEINSIDE SPRING
CONNECTION TYPEFLANGE 2ND END
CONNECTION TYPETHREADED INTERNAL PIPE 1ST END
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) 1ST END
DISK LOADING METHODSPRING
FIRST CONNECTION FACE TO CENTERLINE DISTANCE3.000 INCHES
FLANGE FACE DESIGNPLAIN 2ND END
FLANGE SHAPEROUND WITH HOLES 2ND END
FLOW CONTROL DEVICEDISK
MATERIALCOPPER ALLOY BODY
MATERIALNICKEL ALLOY FLOW CONTROL DEVICE
MATERIALNICKEL ALLOY SEAT
MATERIALNICKEL ALLOY STEM
MAXIMUM OPERATING PRESSURE100.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP425.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER4.250 INCHES 2ND END
NOMINAL PIPE SIZE ACCOMMODATED1.250 INCHES 1ST END
NOMINAL THICKNESS0.438 INCHES 2ND END
NOMINAL THREAD SIZE1.250 INCHES 1ST END
SECOND CONNECTION FACE TO CENTERLINE DISTANCE1.906 INCHES
STYLE DESIGNATORANGLE FLANGED ENDS
THREAD DIRECTIONRIGHT-HAND 1ST END
THREAD SERIES DESIGNATORNPT 1ST END
VALVE OPERATION METHODAUTOMATIC OR MANUAL
VALVE SIZE1.000 INCHES


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