4820-01-351-2938 VALVE,SAFETY RELIEF Index 4820-01-351-2940 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-351-2939

Federal Supply Class:
4820

National Item Identification Number:
013512939

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:
1541D21 SET 15016497DRESSER, INC.
1541D21 SET 150 PSI16497DRESSER, INC.
31468316497DRESSER, INC.
314683-1541D16497DRESSER, INC.


Techincal Specification:
CONNECTION STYLEPLAIN (PIPE) FIRST END
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) SECOND END
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
CONNECTION TYPETHREADED INTERNAL PIPE SECOND END
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEDISK
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIALBRONZE BODY
MATERIALCOPPER ALLOY FLOW CONTROL DEVICE
MAXIMUM OPERATING TEMP406.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDGAS, NATURAL SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDSTEAM THIRD RESPONSE
NOMINAL THREAD SIZE0.750 INCHES FIRST END
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORANGLE
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD SERIES DESIGNATORNPT ALL ENDS


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