4820-00-287-3148 VALVE,SAFETY RELIEF Index 4820-00-287-3154 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-287-3152

Federal Supply Class:
4820

National Item Identification Number:
002873152

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:
833T1A405081336CHIEF OF ENGINEERS DEPT OF ARMY
T1A405017431ILLINOIS TOOL WORKS INC.
TIA505017431ILLINOIS TOOL WORKS INC.


Techincal Specification:
STYLE DESIGNATORANGLE
VALVE OPERATION METHODAUTOMATIC OR
MANUAL
MATERIALCOPPER ALLOY OVERALL
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
MAXIMUM OPERATING PRESSURE40.0 POUNDS PER SQUARE INCH 1ST RESPONSE
VALVE DISCHARGE FLOW RATE55.0 CUBIC FEET PER MINUTE
CONNECTION TYPETHREADED EXTERNAL PIPE 1ST END
CONNECTION STYLEPLAIN (PIPE) 1ST END
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES 1ST END
THREAD SERIES DESIGNATORNPT 1ST END
NOMINAL THREAD SIZE0.250 INCHES 1ST END
THREAD DIRECTIONRIGHT-HAND 1ST END
BONNET TYPEINSIDE SPRING
BONNET ATTACHMENT METHODTHREADED
DISK LOADING METHODSPRING
OPENING PRESSURE SETTING50.0 POUNDS PER SQUARE INCH
FEATURES PROVIDEDVALVE STEM LOCK SHIELD


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