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National Stock Number: 4820-01-551-1121
Federal Supply Class: 4820
National Item Identification Number: 015511121
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:
D559B-2M-D-8 | 91816 | CIRCOR AEROSPACE, INC. |
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Techincal Specification:
STYLE DESIGNATOR | STRAIGHT THRU | VALVE OPERATION METHOD | AUTOMATIC | MATERIAL | COPPER ALLOY BODY | FLOW CONTROL DEVICE | POPPET | MEDIA FOR WHICH DESIGNED | AIR SINGLE RESPONSE | MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE | MAXIMUM OPERATING TEMP | 275.0 DEG FAHRENHEIT SINGLE 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 1ST END | THREAD DIRECTION | RIGHT-HAND 1ST END | DISK LOADING METHOD | SPRING | OPENING PRESSURE SETTING | 8.0 POUNDS PER SQUARE INCH | ADJUSTABLE PRESSURE RANGE | 5.6 TO 13.9 POUNDS PER SQUARE INCH | FURNISHED ITEMS AND QUANTITY | 1 DEFLECTOR CAP | MINIMUM OPERATING TEMP | -40.0 DEG FAHRENHEIT | SPECIAL FEATURES | ADJUSTABLE POPPET VALVE, ZERO LEAKAGE, OUT TO ATMOSHERE; TEMPERATURE RANGE DETERMINED MY SEAL MATERIAL | PART NAME ASSIGNED BY CONTROLLING AGENCY | ADJUSTABLE POPOFF RELIEF VALVE |
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