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:
ADJUSTABLE PRESSURE RANGE+33.0 TO 55.0 POUNDS PER SQUARE INCH
CONNECTION STYLESOCKET ALL ENDS
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEDISK
OPERATING PRESSURE2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A276 COND T ASSN STD SINGLE MATERIAL RESPONSE STEM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A479 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A479 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIALSTEEL COMP 316 BODY
MATERIALSTEEL COMP 316 FLOW CONTROL DEVICE
MATERIALSTEEL COMP 410 STEM
MAXIMUM OPERATING TEMP800.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
MINIMUM OPERATING TEMP401.0 FAHRENHEIT
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES SECOND END
NOMINAL PIPE SIZE ACCOMMODATED1.000 INCHES FIRST END
NONDEFINITIVE SPEC/STD DATAA-1 TYPE AND C CLASS
OPENING PRESSURE SETTING50.0 POUNDS PER SQUARE INCH
SPECIAL FEATURESW/LIFTING LEVER AND INCONEL SPRING
VALVE DISCHARGE FLOW RATE93.0 POUNDS PER HOUR
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORANGLE


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