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National Stock Number:
4820-01-130-0654
Federal Supply Class:
4820
National Item Identification Number:
011300654
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:
| 411509-4 | 96214 | RAYTHEON COMPANY | | D559B-2M-20 | 91816 | CIRCOR AEROSPACE, INC. |
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Techincal Specification:
| STYLE DESIGNATOR | STRAIGHT THRU | | VALVE OPERATION METHOD | AUTOMATIC | | MATERIAL | COPPER ALLOY BODY | | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING | | FLOW CONTROL DEVICE | POPPET | | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE | | ACETYLENE 2ND RESPONSE | | AMMONIA, GASEOUS 3RD RESPONSE | | REFRIGERANT 12 4TH RESPONSE | | HYDROGEN 5TH RESPONSE | | MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE | | MAXIMUM OPERATING TEMP | -40.0 DEG FAHRENHEIT 1ST RESPONSE | | 250.0 DEG FAHRENHEIT 2ND RESPONSE | | CONNECTION TYPE | THREADED EXTERNAL PIPE 1ST END | | CONNECTION STYLE | PLAIN (PIPE) 1ST END | | THREAD SERIES DESIGNATOR | NPT 1ST END | | NOMINAL THREAD SIZE | 0.250 INCHES ALL ENDS | | THREAD DIRECTION | RIGHT-HAND ALL ENDS | | DISK LOADING METHOD | SPRING | | OPENING PRESSURE SETTING | 20.0 POUNDS PER SQUARE INCH | | ADJUSTABLE PRESSURE RANGE | 0.5 TO 150.0 POUNDS PER SQUARE INCH | | MOUNTING FACILITY | THREADED FASTENER | | FURNISHED ITEMS AND QUANTITY | 1 DEFLECTOR CAP | | SPECIAL FEATURES | MAX OPERTING PRESSURE AND TEMP,200 LB PSI,280 DEG F; DESIGNED FOR AIR,ALCOHOL,AMMONIA,HYDROCARBON FUEL/OIL,HELIUM,HYDROGEN,AND GASEOUS NITROGEN |
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