4820-01-150-0858 VALVE,SAFETY RELIEF Index 4820-01-150-0860 CARTRIDGE,SHUT-OFF VALVE

National Stock Number:
4820-01-150-0859

Federal Supply Class:
4820

National Item Identification Number:
011500859

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:
1315340118876U S ARMY AVIATION AND MISSILE COMMAND
13153401-118876U S ARMY AVIATION AND MISSILE COMMAND
559B-2M-20091816CIRCOR AEROSPACE, INC.
HP559B-2M-20091816CIRCOR AEROSPACE, INC.


Techincal Specification:
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
VALVE OPERATION METHODAUTOMATIC
MATERIALCOPPER ALLOY OVERALL
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
ACETYLENE 2ND RESPONSE
AMMONIA, GASEOUS 3RD RESPONSE
REFRIGERANT 12 4TH RESPONSE
HYDROGEN 5TH RESPONSE
MAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP-40.0 DEG FAHRENHEIT 1ST RESPONSE
250.0 DEG FAHRENHEIT 2ND RESPONSE
CONNECTION TYPETHREADED EXTERNAL PIPE 1ST END
CONNECTION STYLEPLAIN (PIPE) 1ST END
THREAD SERIES DESIGNATORNPT 1ST END
NOMINAL THREAD SIZE0.250 INCHES 1ST END
THREAD DIRECTIONRIGHT-HAND 1ST END
OPENING PRESSURE SETTING200.0 POUNDS PER SQUARE INCH
ADJUSTABLE PRESSURE RANGE176.0 TO 272.0 POUNDS PER SQUARE INCH
SPECIAL FEATURESPOP-OFF TYPE


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