4820-01-285-7229 VALVE,RELIEF,PRESSURE AND TEMPER Index 4820-01-285-7231 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-285-7230

Federal Supply Class:
4820

National Item Identification Number:
012857230

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:
20213GM41M01343ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20213GM41M15187EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP
20213GM41MVM03950NAVAL INVENTORY CONTROL POINT MECHANICSBURG


Techincal Specification:
STYLE DESIGNATORANGLE
VALVE OPERATION METHODAUTOMATIC
MATERIALCOPPER ALLOY 922 BODY
NICKEL ALLOY FLOW CONTROL DEVICE
NICKEL ALLOY SEAT
NICKEL ALLOY STEM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B-61 ASSN STD SINGLE MATERIAL RESPONSE BODY
QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT
QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM
FLOW CONTROL DEVICEDISK
MAXIMUM OPERATING PRESSURE400.0 POUNDS PER SQUARE INCH 1ST RESPONSE
335.0 POUNDS PER SQUARE INCH 2ND RESPONSE
MAXIMUM OPERATING TEMP150.0 DEG FAHRENHEIT 1ST RESPONSE
250.0 DEG FAHRENHEIT 2ND RESPONSE
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLESOCKET WITH BRAZING RING ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES ALL ENDS
ADJUSTABLE PRESSURE RANGE35.0 TO 44.0 POUNDS PER SQUARE INCH
SPECIAL FEATURESSPRING NUMBER: 75-GS


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