4820-01-218-4611 VALVE,SAFETY RELIEF Index 4820-01-218-4613 VALVE,BUTTERFLY

National Stock Number:
4820-01-218-4612

Federal Supply Class:
4820

National Item Identification Number:
012184612

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:
D559A-8D-1791816CIRCOR AEROSPACE, INC.


Techincal Specification:
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
CONNECTION STYLEPLAIN (TUBE) ALL ENDS
DISK LOADING METHODSPRING
FURNISHED ITEMS AND QUANTITY1 DEFLECTOR CAP
FLOW CONTROL DEVICEPOPPET
MATERIALALUMINUM ALLOY 2024 BODY
MAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP-40.0 FAHRENHEIT 1ST RESPONSE
MAXIMUM OPERATING TEMP280.0 FAHRENHEIT 2ND RESPONSE
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
MEDIA FOR WHICH DESIGNEDALCOHOL, ETHYL 2ND RESPONSE
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON 3RD RESPONSE
MEDIA FOR WHICH DESIGNEDHELIUM 4TH RESPONSE
MEDIA FOR WHICH DESIGNEDHYDROGEN 5TH RESPONSE
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS
OPENING PRESSURE SETTING17.0 POUNDS PER SQUARE INCH
STYLE DESIGNATORSTRAIGHT THRU W/BAFFLE
THREAD CLASS3A ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD SERIES DESIGNATORUNJF ALL ENDS
VALVE OPERATION METHODAUTOMATIC


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