4820-01-317-8230 VALVE,SAFETY RELIEF Index 4820-01-317-8232 VALVE,BUTTERFLY

National Stock Number:
4820-01-317-8231

Federal Supply Class:
4820

National Item Identification Number:
013178231

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:
559T-2M-4091816CIRCOR AEROSPACE, INC.
G40015524930L3HARRIS TECHNOLOGIES, INC
G400155-724930L3HARRIS TECHNOLOGIES, INC


Techincal Specification:
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
VALVE OPERATION METHODAUTOMATIC
MATERIALSTEEL CORROSION RESISTING BODY
STEEL CORROSION RESISTING FLOW CONTROL DEVICE
STEEL CORROSION RESISTING SEAT
STEEL CORROSION RESISTING STEM
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 ALL ENDS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
THREAD SERIES DESIGNATORNPT ALL ENDS
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
DISK LOADING METHODSPRING
OPENING PRESSURE SETTING40.0 POUNDS PER SQUARE INCH
SPECIAL FEATURESPOP-OFF TYPE


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