4820-00-639-9265 VALVE,STOP-CHECK Index 4820-00-639-9274 VALVE,REGULATING,FLUID PRESSURE

National Stock Number:
4820-00-639-9271

Federal Supply Class:
4820

National Item Identification Number:
006399271

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:
417-2200-69279ALT9PCV580064NAVAL SHIP SYSTEMS COMMAND
42452ALT9PC3-8 4881316PORTSMOUTH NAVAL SHIPYARD
426-2100-954367PCV1080064NAVAL SHIP SYSTEMS COMMAND
475-4824-72316ALT9PC3-84880064NAVAL SHIP SYSTEMS COMMAND
488-2200-720760ALT2PCV780064NAVAL SHIP SYSTEMS COMMAND
855-417ALT9PCV581316PORTSMOUTH NAVAL SHIPYARD
870-488PCV781316PORTSMOUTH NAVAL SHIPYARD


Techincal Specification:
CONNECTION TYPETHREADED EXTERNAL PIPE 2ND END
CONNECTION TYPETHREADED INTERNAL PIPE 1ST END
CONNECTION STYLEPLAIN (PIPE) 2ND END
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) 1ST END
DISK LOADING METHODSPRING
MATERIALCOPPER ALLOY BODY
MATERIALNICKEL ALLOY SEAT
NOMINAL PIPE SIZE ACCOMMODATED0.375 INCHES 1ST END
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES 2ND END
NOMINAL THREAD SIZE0.500 INCHES 2ND END
NOMINAL THREAD SIZE0.375 INCHES 1ST END
OPENING PRESSURE SETTING48.0 POUNDS PER SQUARE INCH
STYLE DESIGNATORANGLE
THREAD DIRECTIONRIGHT-HAND 1ST END
THREAD DIRECTIONRIGHT-HAND 2ND END
THREAD QUANTITY PER INCH14 2ND END
THREAD QUANTITY PER INCH18 1ST END
THREAD SERIES DESIGNATORNPT 1ST END
THREAD SERIES DESIGNATORNPT 2ND END


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