4820-01-148-6939 VALVE,SAFETY RELIEF Index 4820-01-148-6941 VALVE,GLOBE

National Stock Number:
4820-01-148-6940

Federal Supply Class:
4820

National Item Identification Number:
011486940

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:
5013600 FIND 1353711NAVAL SEA SYSTEMS COMMAND
ASTM F150881346AMERICAN SOCIETY FOR TESTING AND MATERIALS
ASTM F1508-965CCWWB12281346AMERICAN SOCIETY FOR TESTING AND MATERIALS
MIL-V-1863481349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
BONNET ATTACHMENT METHODBOLTED
BONNET TYPEINSIDE SCREW
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
DISK LOADING METHODSPRING
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
FLOW CONTROL DEVICEDISK
OPERATING PRESSURE400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIALCOPPER ALLOY OVERALL
MAXIMUM OPERATING TEMP150.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
NOMINAL THREAD SIZE0.500 INCHES FIRST END
NOMINAL THREAD SIZE0.500 INCHES SECOND END
NONDEFINITIVE SPEC/STD DATA7 CLASS AND A STYLE AND 2 TYPE
OPENING PRESSURE SETTING128.0 POUNDS PER SQUARE INCH
SPECIAL FEATURESREDUCING CONNECTOR,0.500 IN. NPTF TO 0.250 IN. NOMINAL FLARE
VALVE OPERATION METHODMANUAL
STYLE DESIGNATORANGLE
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND END
THREAD SERIES DESIGNATORNPT FIRST END
THREAD SERIES DESIGNATORNPT SECOND END


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