4820-01-259-2273 VALVE,REGULATING,FLUID PRESSURE Index 4820-01-259-2275 VALVE,REGULATING,FLUID PRESSURE

National Stock Number:
4820-01-259-2274

Federal Supply Class:
4820

National Item Identification Number:
012592274

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:
2023501343ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
20235L51, CD SHT 1628215187EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP
20235L51M CD SHT 1628201343ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY


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 PRESSURE460.0 POUNDS PER SQUARE INCH 1ST RESPONSE
150.0 POUNDS PER SQUARE INCH 2ND RESPONSE
MAXIMUM OPERATING TEMP165.0 DEG FAHRENHEIT SINGLE RESPONSE
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLESOCKET WITH BRAZING RING ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES ALL ENDS
ADJUSTABLE PRESSURE RANGE76.0 TO 90.0 POUNDS PER SQUARE INCH
SPECIAL FEATURESSPRING NUMBER: 75L


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