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National Stock Number:
4820-01-221-8854
Federal Supply Class:
4820
National Item Identification Number:
012218854
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.
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Manufacturer Information:
| 71010469003 | 89944 | ELBITAMERICA, INC. | | D559A-4D-45 | 91816 | CIRCOR AEROSPACE, INC. |
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Techincal Specification:
| CONNECTION STYLE | PLAIN (TUBE) ALL ENDS | | CONNECTION TYPE | THREADED EXTERNAL TUBE ALL ENDS | | FURNISHED ITEMS AND QUANTITY | 1 DEFLECTOR CAP | | FLOW CONTROL DEVICE | POPPET | | MATERIAL | ALUMINUM ALLOY BODY | | MAXIMUM OPERATING TEMP | 280.0 FAHRENHEIT SECOND RESPONSE | | MAXIMUM OPERATING TEMP | -40.0 FAHRENHEIT FIRST RESPONSE | | MEDIA FOR WHICH DESIGNED | AIR FIRST RESPONSE | | MEDIA FOR WHICH DESIGNED | ALCOHOL, ETHYL SECOND RESPONSE | | MEDIA FOR WHICH DESIGNED | AMMONIA, GASEOUS THIRD RESPONSE | | MEDIA FOR WHICH DESIGNED | FUEL/OIL, HYDROCARBON FOURTH RESPONSE | | MEDIA FOR WHICH DESIGNED | HYDROGEN FIFTH RESPONSE | | NOMINAL THREAD SIZE | 0.438 INCHES ALL ENDS | | OPENING PRESSURE SETTING | 45.0 POUNDS PER SQUARE INCH | | OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE | | VALVE OPERATION METHOD | AUTOMATIC | | STYLE DESIGNATOR | STRAIGHT THRU | | THREAD CLASS | 3A ALL ENDS | | THREAD DIRECTION | RIGHT-HAND ALL ENDS | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
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