4820-01-249-0007 VALVE,SAFETY RELIEF Index 4820-01-249-0009 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-249-0008

Federal Supply Class:
4820

National Item Identification Number:
012490008

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:
559B-6M-3091816CIRCOR AEROSPACE, INC.


Techincal Specification:
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
FLOW CONTROL DEVICEPOPPET
OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIALCOPPER ALLOY BODY
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDACETYLENE SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDAMMONIA, GASEOUS THIRD RESPONSE
MEDIA FOR WHICH DESIGNEDHYDROGEN FIFTH RESPONSE
MEDIA FOR WHICH DESIGNEDREFRIGERANT 12 FOURTH RESPONSE
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS
OPENING PRESSURE SETTING30.0 POUNDS PER SQUARE INCH
SPECIAL FEATURESPOP-OFF TYPE
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD SERIES DESIGNATORNPT ALL ENDS


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