4820-01-189-8523 VALVE,SAFETY RELIEF Index 4820-01-189-8525 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-189-8524

Federal Supply Class:
4820

National Item Identification Number:
011898524

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:
562A-2M-5.591816CIRCOR AEROSPACE, INC.
92602609205LOCKHEED MARTIN CORP ELECTRONICS AND MISSILES DIV


Techincal Specification:
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
VALVE OPERATION METHODAUTOMATIC
MATERIALALUMINUM ALLOY 2024 BODY
ALUMINUM ALLOY AND
RUBBER FLOW CONTROL DEVICE
SURFACE TREATMENTANODIZE
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
STEAM 2ND RESPONSE
MAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP-65.0 DEG FAHRENHEIT 1ST RESPONSE
300.0 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
DISK LOADING METHODSPRING
OPENING PRESSURE SETTING5.5 POUNDS PER SQUARE INCH
SPECIAL FEATURESPOP-OFF TYPE


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