4820-01-223-8650 VALVE,SAFETY RELIEF Index 4820-01-223-8653 VALVE,BUTTERFLY

National Stock Number:
4820-01-223-8651

Federal Supply Class:
4820

National Item Identification Number:
012238651

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:
559T6DB9091816CIRCOR AEROSPACE, INC.


Techincal Specification:
CONNECTION TYPETHREADED EXTERNAL BOSS 2ND END
CONNECTION TYPETHREADED INTERNAL BOSS 1ST END
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) 2ND END
CONNECTION STYLEGASKET SEAL(BOSS) 1ST END
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEDISK
MATERIALSTEEL COMP 303 OVERALL
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON 2ND RESPONSE
MEDIA FOR WHICH DESIGNEDHELIUM 3RD RESPONSE
MEDIA FOR WHICH DESIGNEDHYDROGEN 4TH RESPONSE
NOMINAL THREAD SIZE0.562 INCHES 1ST END
NOMINAL THREAD SIZE0.562 INCHES 2ND END
OPENING PRESSURE SETTING90.0 POUNDS PER SQUARE INCH
THREAD CLASS3A 2ND END
THREAD CLASS3B 1ST END
THREAD DIRECTIONRIGHT-HAND 1ST END
THREAD DIRECTIONRIGHT-HAND 2ND END
THREAD QUANTITY PER INCH18 2ND END
THREAD SERIES DESIGNATORUNF 1ST END
THREAD SERIES DESIGNATORUNJ 2ND END
VALVE OPERATION METHODAUTOMATIC


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