4820-01-267-4997 VALVE,SAFETY RELIEF Index 4820-01-267-4999 VALVE,BALL

National Stock Number:
4820-01-267-4998

Federal Supply Class:
4820

National Item Identification Number:
012674998

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:
20357-7-940-10101343ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20357-7-940-10115187EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP
20357-7-940-101CP03950NAVAL INVENTORY CONTROL POINT MECHANICSBURG


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+2901.0 TO 4000.0 POUNDS PER SQUARE INCH
BONNET ATTACHMENT METHODTHREADED
BONNET TYPEINSIDE SCREW
CONNECTION STYLEPLAIN (TUBE) ALL ENDS
CONNECTION TYPEUNTHREADED INTERNAL TUBE ALL ENDS
CRITICALITY CODE JUSTIFICATIONZZZY
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEDISK
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CL A FED SPEC 1ST MATERIAL RESPONSE OR QQ-N-281,CL B FED SPEC 2ND MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CL A FED SPEC 1ST MATERIAL RESPONSE OR QQ-N-281,CL B FED SPEC 2ND MATERIAL RESPONSE STEM
MATERIALNICKEL ALLOY 400 OR NICKEL ALLOY R-405 FLOW CONTROL DEVICE
MATERIALNICKEL ALLOY 400 OR NICKEL ALLOY R-405 STEM
MAXIMUM OPERATING PRESSURE6000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP165.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDOXYGEN, GASEOUS SINGLE RESPONSE
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES ALL ENDS
OPENING PRESSURE SETTING2901.0 POUNDS PER SQUARE INCH
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
STYLE DESIGNATORANGLE
VALVE OPERATION METHODAUTOMATIC


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