4820-00-289-1788 VALVE,SAFETY RELIEF Index 4820-00-289-1795 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-289-1789

Federal Supply Class:
4820

National Item Identification Number:
002891789

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:
MILV2006581349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
R6215AM16497DRESSER, INC.
TYPE151216497DRESSER, INC.


Techincal Specification:
STYLE DESIGNATORANGLE FLANGED ENDS
VALVE OPERATION METHODAUTOMATIC OR
MANUAL
MATERIALSTEEL UNS J03008 BODY
NICKEL ALLOY FLOW CONTROL DEVICE
STEEL CORROSION RESISTING SEAT
STEEL CORROSION RESISTING STEM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-15083 MIL SPEC SINGLE MATERIAL RESPONSE BODY
FIRST CONNECTION FACE TO CENTERLINE DISTANCE3.750 INCHES
SECOND CONNECTION FACE TO CENTERLINE DISTANCE1.812 INCHES
FLOW CONTROL DEVICEDISK
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP400.0 DEG FAHRENHEIT SINGLE RESPONSE
CONNECTION TYPETHREADED INTERNAL PIPE 1ST END
FLANGE 2ND END
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) 1ST END
FLANGE SHAPEROUND WITH HOLES 2ND END
NOMINAL OUTSIDE DIAMETER3.750 INCHES 2ND END
NOMINAL THICKNESS0.562 INCHES 2ND END
BOLT HOLE QUANTITY4 2ND END
BOLT HOLE NOMINAL DIAMETER0.562 INCHES 2ND END
BOLT CIRCLE NOMINAL DIAMETER2.625 INCHES 2ND END
FLANGE FACE DESIGNRAISED STRAIGHT 2ND END
RAISED FACE NOMINAL HEIGHT0.250 INCHES 2ND END
RAISED FACE NOMINAL DIAMETER2.000 INCHES 2ND END
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES 1ST END
THREAD SERIES DESIGNATORNPT 1ST END
NOMINAL THREAD SIZE0.500 INCHES 1ST END
THREAD QUANTITY PER INCH14 1ST END
THREAD DIRECTIONRIGHT-HAND 1ST END
RENEWABLE SEAT RING TYPETHREADED
BONNET TYPEEXPOSED SPRING
BONNET ATTACHMENT METHODBOLTED
DISK LOADING METHODSPRING
ADJUSTABLE PRESSURE RANGE91.0 TO 144.0 POUNDS PER SQUARE INCH
FURNISHED ITEMS AND QUANTITY1 SIGHT GAGE
FEATURES PROVIDEDVALVE STEM LOCK SHIELD
NONDEFINITIVE SPEC/STD DATA1 TYPE AND
D COMPOSITION
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCEMILV20065


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