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 HOLE NOMINAL DIAMETER0.630 INCHES ALL ENDS
BOLT HOLE QUANTITY4 ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER2.375 INCHES 2ND END
BOLT CIRCLE NOMINAL DIAMETER2.625 INCHES 1ST END
BONNET ATTACHMENT METHODUNION
BONNET TYPEINSIDE SPRING
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
MATERIALSTEEL BODY
MATERIALSTEEL CORROSION RESISTING FLOW CONTROL DEVICE
MATERIALSTEEL CORROSION RESISTING SEAT
MAXIMUM OPERATING TEMP775.0 FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER3.750 INCHES 1ST END
NOMINAL OUTSIDE DIAMETER3.500 INCHES 2ND END
NOMINAL THICKNESS0.425 INCHES 2ND END
NOMINAL THICKNESS0.575 INCHES 1ST END
NONDEFINITIVE SPEC/STD DATA2 TYPE AND D COMPOSITION AND 3-8IN.IPS SIZE
RAISED FACE NOMINAL DIAMETER1.360 INCHES 2ND END
RAISED FACE NOMINAL DIAMETER1.375 INCHES 1ST END
RAISED FACE NOMINAL HEIGHT0.050 INCHES 2ND END
RAISED FACE NOMINAL HEIGHT0.245 INCHES 1ST END
RENEWABLE SEAT RING TYPETHREADED
SECOND CONNECTION FACE TO CENTERLINE DISTANCE3.500 INCHES
SPECIFICATION/STANDARD DATA81349-MIL-V-20065 GOVERNMENT SPECIFICATION
STYLE DESIGNATORANGLE FLANGED ENDS
VALVE DISCHARGE FLOW RATE1493.0 POUNDS PER HOUR
VALVE OPERATION METHODAUTOMATIC
VALVE SIZE0.375 INCHES


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