4820-00-490-5456 VALVE,SAFETY RELIEF Index 4820-00-490-5460 VALVE,PLUG

National Stock Number:
4820-00-490-5457

Federal Supply Class:
4820

National Item Identification Number:
004905457

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-2M-3291816CIRCOR AEROSPACE, INC.
QB200192-1119315HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS FORMER BENDIX NAVIGATION AND CONTROL SYSTEMS
QB200192-1155974HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS FORMER TEST SYSTEMS DIV


Techincal Specification:
CONNECTION TYPETHREADED EXTERNAL PIPE 1ST END
CONNECTION STYLEPLAIN (PIPE) 1ST END
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEPOPPET
MATERIALCOPPER ALLOY OVERALL
MAXIMUM OPERATING TEMP-40.0 FAHRENHEIT 1ST RESPONSE250.0 FAHRENHEIT 2ND RESPONSE
MAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDACETYLENE 2ND RESPONSE
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
MEDIA FOR WHICH DESIGNEDAMMONIA, GASEOUS 3RD RESPONSE
MEDIA FOR WHICH DESIGNEDHYDROGEN 5TH RESPONSE
MEDIA FOR WHICH DESIGNEDREFRIGERANT 12 4TH RESPONSE
NOMINAL THREAD SIZE0.250 INCHES 1ST END
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES 1ST END
OPENING PRESSURE SETTING32.0 POUNDS PER SQUARE INCH
SPECIAL FEATURESPOP-OFF TYPE
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
THREAD DIRECTIONRIGHT-HAND 1ST END
THREAD SERIES DESIGNATORNPT 1ST END
VALVE OPERATION METHODAUTOMATIC


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