4820-00-287-4637 VALVE,SAFETY RELIEF Index 4820-00-287-4644 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-287-4642

Federal Supply Class:
4820

National Item Identification Number:
002874642

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:
214-4900-799254PCV78380064NAVAL SHIP SYSTEMS COMMAND
214-4900-799254PCV927780064NAVAL SHIP SYSTEMS COMMAND
282-4900-801823REVGPCV6680064NAVAL SHIP SYSTEMS COMMAND
282-4900-801832REVCPCV1380064NAVAL SHIP SYSTEMS COMMAND
4824-158796ALT12PC1-2-12080064NAVAL SHIP SYSTEMS COMMAND
43835ALT10PC1T01281316PORTSMOUTH NAVAL SHIPYARD
4824-934713ALT10PC1T01280064NAVAL SHIP SYSTEMS COMMAND
4824-934713PC1T01280064NAVAL SHIP SYSTEMS COMMAND
9400-724352PCV880064NAVAL SHIP SYSTEMS COMMAND
78768PCV881316PORTSMOUTH NAVAL SHIPYARD


Techincal Specification:
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) FIRST END
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEDISK
MATERIALCOPPER ALLOY BODY
MATERIALNICKEL ALLOY SEAT
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES FIRST END
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES SECOND END
NOMINAL THREAD SIZE0.500 INCHES FIRST END
NOMINAL THREAD SIZE0.500 INCHES SECOND END
OPENING PRESSURE SETTING625.0 POUNDS PER SQUARE INCH
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFERENTIATED BY PAC ADSV AND VALVE SIZE
STYLE DESIGNATORANGLE
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND END
THREAD QUANTITY PER INCH14 FIRST END
THREAD QUANTITY PER INCH14 SECOND END
THREAD SERIES DESIGNATORNPT FIRST END
THREAD SERIES DESIGNATORNPT SECOND END
VALVE OPERATION METHODAUTOMATIC


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