4820-01-315-6640 VALVE,SAFETY RELIEF Index 4820-01-315-6642 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-315-6641

Federal Supply Class:
4820

National Item Identification Number:
013156641

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-8M-491816CIRCOR AEROSPACE, INC.


Techincal Specification:
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
VALVE OPERATION METHODAUTOMATIC
MATERIALCOPPER ALLOY BODY
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
AMMONIA, GASEOUS 2ND RESPONSE
REFRIGERANT 12 3RD RESPONSE
HYDROGEN 4TH RESPONSE
GAS, INERT 5TH RESPONSE
MAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP250.0 DEG FAHRENHEIT SINGLE RESPONSE
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
THREAD SERIES DESIGNATORNPT ALL ENDS
NOMINAL THREAD SIZE1.000 INCHES ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
DISK LOADING METHODSPRING
OPENING PRESSURE SETTING4.0 POUNDS PER SQUARE INCH
ADJUSTABLE PRESSURE RANGE2.5 TO 5.9 POUNDS PER SQUARE INCH
SPECIAL FEATURESPOP-OFF TYPE


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