4820-00-289-1882 VALVE,SAFETY RELIEF Index 4820-00-289-1884 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-289-1883

Federal Supply Class:
4820

National Item Identification Number:
002891883

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:
A6814EITEM6801343ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY
DD445S4824-51ALT2ITEM6853711NAVAL SEA SYSTEMS COMMAND
DD445S4824-51ALT2ITEM6880064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
STYLE DESIGNATORANGLE
VALVE OPERATION METHODAUTOMATIC
MATERIALCOPPER ALLOY BODY
NICKEL ALLOY FLOW CONTROL DEVICE
NICKEL ALLOY SEAT
NICKEL ALLOY STEM
FLOW CONTROL DEVICEDISK
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE250.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP425.0 DEG FAHRENHEIT SINGLE RESPONSE
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES 1ST END
THREAD SERIES DESIGNATORNPT ALL ENDS
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
RENEWABLE SEAT RING TYPETHREADED
BONNET TYPEEXPOSED SPRING
BONNET ATTACHMENT METHODBOLTED
DISK LOADING METHODSPRING
ADJUSTABLE PRESSURE RANGE5.0 TO 15.0 POUNDS PER SQUARE INCH


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