4820-00-287-3138 VALVE,SAFETY RELIEF Index 4820-00-287-3147 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-287-3139

Federal Supply Class:
4820

National Item Identification Number:
002873139

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:
199016497DRESSER, INC.
1990T-1/21 35-50PSI16497DRESSER, INC.
1990T-1/2X1-36-50PSI16497DRESSER, INC.


Techincal Specification:
STYLE DESIGNATORANGLE
VALVE OPERATION METHODAUTOMATIC
MATERIALSTEEL COMP 316 BODY
STEEL COMP 316 FLOW CONTROL DEVICE
STEEL COMP 410 STEM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A479 ASSN STD SINGLE MATERIAL RESPONSE BODY
ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
ASTM A276 COND T ASSN STD SINGLE MATERIAL RESPONSE STEM
FLOW CONTROL DEVICEDISK
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE2000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP800.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE DISCHARGE FLOW RATE93.0 POUNDS PER HOUR
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLESOCKET ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED1.000 INCHES 1ST END
0.500 INCHES 2ND END
DISK LOADING METHODSPRING
OPENING PRESSURE SETTING50.0 POUNDS PER SQUARE INCH
ADJUSTABLE PRESSURE RANGE33.0 TO 55.0 POUNDS PER SQUARE INCH
MINIMUM OPERATING TEMP401.0 DEG FAHRENHEIT
SPECIAL FEATURESW/LIFTING LEVER AND INCONEL SPRING
NONDEFINITIVE SPEC/STD DATAA-1 TYPE AND
C CLASS


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