4820-01-250-1534 VALVE,CHECK Index 4820-01-250-1536 VALVE,PLUG

National Stock Number:
4820-01-250-1535

Federal Supply Class:
4820

National Item Identification Number:
012501535

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:
120691656232LOCKHEED MARTIN CORPORATION
559A-6D-291816CIRCOR AEROSPACE, INC.
594264553711NAVAL SEA SYSTEMS COMMAND
94264553711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
CONNECTION STYLEPLAIN (TUBE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEPOPPET
MATERIALALUMINUM BODY
MAXIMUM OPERATING TEMP280.0 FAHRENHEIT SECOND RESPONSE
MAXIMUM OPERATING TEMP-40.0 FAHRENHEIT FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
MEDIA FOR WHICH DESIGNEDALCOHOL, ETHYL SECOND RESPONSE
MEDIA FOR WHICH DESIGNEDAMMONIA, GASEOUS THIRD RESPONSE
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON FOURTH RESPONSE
MEDIA FOR WHICH DESIGNEDHELIUM FIFTH RESPONSE
NOMINAL THREAD SIZE0.562 INCHES ALL ENDS
OPENING PRESSURE SETTING2.0 POUNDS PER SQUARE INCH
OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
SURFACE TREATMENTANODIZE LOCATION NOT OTHERWISE SPECIFIED
THREAD CLASS3A ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS


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