4820-00-289-4370 VALVE,SAFETY RELIEF Index 4820-00-289-4381 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-289-4375

Federal Supply Class:
4820

National Item Identification Number:
002894375

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:
323751224617GENERAL MOTORS CORP
323751255380HATCH & KIRK, INC.
81127S41-20147ALT2PC2253711NAVAL SEA SYSTEMS COMMAND
81127S41-21502ALT1PC1253711NAVAL SEA SYSTEMS COMMAND
323751272915GENERAL MOTORS CORP ELECTRO-MOTIVE DIV
81127S41-20147ALT2PC2280064NAVAL SHIP SYSTEMS COMMAND
A763624617GENERAL MOTORS CORP
N20147PC2224617GENERAL MOTORS CORP
81127S41-26250ALT4PC4253711NAVAL SEA SYSTEMS COMMAND
A763672915GENERAL MOTORS CORP ELECTRO-MOTIVE DIV
81127S41-21502ALT1PC1280064NAVAL SHIP SYSTEMS COMMAND
81127S41-26250ALT4PC4280064NAVAL SHIP SYSTEMS COMMAND
81127S41-26447ALT4PC4180064NAVAL SHIP SYSTEMS COMMAND
81127S41-26658ALT8PC1280064NAVAL SHIP SYSTEMS COMMAND
N21502PC1224617GENERAL MOTORS CORP
N26250PC4224617GENERAL MOTORS CORP
N26447PC4124617GENERAL MOTORS CORP
N26658PC1224617GENERAL MOTORS CORP
N26658PC1255380HATCH & KIRK, INC.
N26447PC4155380HATCH & KIRK, INC.
N26250PC4255380HATCH & KIRK, INC.
N21502PC1255380HATCH & KIRK, INC.
N20147PC2255380HATCH & KIRK, INC.
N20147PC2272915GENERAL MOTORS CORP ELECTRO-MOTIVE DIV
N21502PC1272915GENERAL MOTORS CORP ELECTRO-MOTIVE DIV
N26250PC4272915GENERAL MOTORS CORP ELECTRO-MOTIVE DIV
N26447PC4172915GENERAL MOTORS CORP ELECTRO-MOTIVE DIV
N26658PC1272915GENERAL MOTORS CORP ELECTRO-MOTIVE DIV


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+31.0 TO 60.0 POUNDS PER SQUARE INCH+31.0 TO 60.0 POUNDS PER SQUARE INCH
BONNET TYPEINSIDE SPRINGINSIDE SPRING
BONNET ATTACHMENT METHODTHREADEDTHREADED
CONNECTION STYLEPLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) FIRST ENDPLAIN,OPTIONAL END(PIPE) FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND ENDTHREADED EXTERNAL PIPE SECOND END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST ENDTHREADED INTERNAL PIPE FIRST END
DISK LOADING METHODSPRINGSPRING
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDEPRESSURE TIGHT OUTLET SIDE
FLOW CONTROL DEVICEDISKDISK
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOYB5/D/ FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOYB5/D/ FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICEQQ-C-390,ALLOYB5/D/ FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOYB5/D/ FED SPEC SINGLE MATERIAL RESPONSE SEATQQ-C-390,ALLOYB5/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALCOPPER ALLOY 836 FLOW CONTROL DEVICECOPPER ALLOY 836 SEAT
MATERIALCOPPER ALLOY 836 SEATCOPPER ALLOY 836 BODY
MATERIALSTEEL STEMCOPPER ALLOY 836 FLOW CONTROL DEVICE
MATERIALSTEEL STEM
MAXIMUM OPERATING TEMP400.0 FAHRENHEIT SINGLE RESPONSE400.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SECOND RESPONSESTEAM FIRST RESPONSE
NOMINAL PIPE SIZE ACCOMMODATED0.375 INCHES SECOND END0.375 INCHES SECOND END
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES FIRST END0.500 INCHES FIRST END
NOMINAL THREAD SIZE0.500 INCHES FIRST END0.500 INCHES FIRST END
NOMINAL THREAD SIZE0.375 INCHES SECOND END0.375 INCHES SECOND END
OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
VALVE OPERATION METHODAUTOMATICAUTOMATIC
STYLE DESIGNATORANGLE
THREAD DIRECTIONRIGHT-HAND FIRST ENDRIGHT-HAND FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND ENDRIGHT-HAND SECOND END
THREAD SERIES DESIGNATORNPT SECOND END
THREAD SERIES DESIGNATORNPT SECOND ENDNPT FIRST END


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