4820-00-287-3400 VALVE,SAFETY RELIEF Index 4820-00-287-3413 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-287-3402

Federal Supply Class:
4820

National Item Identification Number:
002873402

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:
ADJUSTABLE PRESSURE RANGE+9.0 TO 11.0 POUNDS PER SQUARE INCH
BOLT CIRCLE NOMINAL DIAMETER5.000 INCHES 1ST END
BOLT HOLE NOMINAL DIAMETER0.562 INCHES 1ST END
BOLT HOLE QUANTITY6 1ST END
CONNECTION TYPEFLANGE 1ST END
CONNECTION TYPEFLANGE 2ND END
DISK LOADING METHODSPRING
FURNISHED ITEMS AND QUANTITY1 SIGHT GAGE
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
FIRST CONNECTION FACE TO CENTERLINE DISTANCE6.500 INCHES
FLANGE FACE DESIGNPLAIN 1ST END
FLANGE SHAPEROUND WITH HOLES 1ST END
FLOW CONTROL DEVICESTEM OR DISK
NOMINAL OUTSIDE DIAMETER6.125 INCHES 1ST END
MATERIALCOPPER ALLOY FLOW CONTROL DEVICE
MATERIALNICKEL ALLOY SEAT
MATERIALNICKEL ALLOY STEM
MATERIALSTEEL BODY
MAXIMUM OPERATING TEMP650.0 DEG FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
SECOND CONNECTION FACE TO CENTERLINE DISTANCE4.625 INCHES
VALVE OPERATION METHODAUTOMATIC OR MANUAL
STYLE DESIGNATORANGLE FLANGED ENDS


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