4820-01-297-5048 VALVE,SAFETY RELIEF Index 4820-01-297-5050 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-297-5049

Federal Supply Class:
4820

National Item Identification Number:
012975049

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:
MIL-V-2006581349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+11.0 TO 15.0 POUNDS PER SQUARE INCH
BOLT CIRCLE NOMINAL DIAMETER2.375 INCHES SECOND END
BOLT CIRCLE NOMINAL DIAMETER2.625 INCHES FIRST END
BOLT HOLE NOMINAL DIAMETER0.630 INCHES ALL ENDS
BOLT HOLE QUANTITY4 ALL ENDS
BONNET TYPEINSIDE SPRING
BONNET ATTACHMENT METHODUNION
CONNECTION TYPEFLANGE ALL ENDS
DISK LOADING METHODSPRING
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
FIRST CONNECTION FACE TO CENTERLINE DISTANCE3.250 INCHES
FLANGE FACE DESIGNRAISED STRAIGHT ALL ENDS
FLANGE SHAPEROUND WITH HOLES ALL ENDS
FLOW CONTROL DEVICEDISK
OPERATING PRESSURE400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIALSTEEL BODY
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MATERIALSTEEL CORROSION RESISTING SEAT
MAXIMUM OPERATING TEMP775.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER3.500 INCHES SECOND END
NOMINAL OUTSIDE DIAMETER3.750 INCHES FIRST END
NOMINAL THICKNESS0.425 INCHES SECOND END
NOMINAL THICKNESS0.575 INCHES FIRST END
NONDEFINITIVE SPEC/STD DATA2 TYPE AND D COMPOSITION AND 3-8IN.IPS SIZE
RAISED FACE NOMINAL DIAMETER1.360 INCHES SECOND END
RAISED FACE NOMINAL DIAMETER1.375 INCHES FIRST END
RAISED FACE NOMINAL HEIGHT0.050 INCHES SECOND END
RAISED FACE NOMINAL HEIGHT0.245 INCHES FIRST END
RENEWABLE SEAT RING TYPETHREADED
SECOND CONNECTION FACE TO CENTERLINE DISTANCE3.500 INCHES
VALVE OPERATION METHODAUTOMATIC
VALVE SIZE0.375 INCHES
VALVE DISCHARGE FLOW RATE1493.0 POUNDS PER HOUR
SPECIFICATION/STANDARD DATA81349-MIL-V-20065 GOVERNMENT SPECIFICATION
STYLE DESIGNATORANGLE FLANGED ENDS


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