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		                        | National Stock Number:
 4820-00-817-4986
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 008174986
 
 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:
 
 | 13153401-2 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |  | 559B-2M-1 | 91816 | CIRCOR AEROSPACE, INC. |  | ZM2RV02B010B | 62701 | ZEVCO INC |  | SP248H | 98425 | ERIE ENGINEERED PRODUCTS, INC. | 
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 Techincal Specification:
 
 | ADJUSTABLE PRESSURE RANGE | +0.5/+140.0 POUNDS PER SQUARE INCH |  | CONNECTION TYPE | THREADED EXTERNAL PIPE ALL ENDS |  | CONNECTION STYLE | PLAIN (PIPE) ALL ENDS |  | FLOW CONTROL DEVICE | POPPET |  | MATERIAL | COPPER ALLOY BODY |  | PROPRIETARY CHARACTERISTICS | PACS |  | MAXIMUM OPERATING TEMP | 250.0 DEG FAHRENHEIT SINGLE RESPONSE |  | MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |  | MEDIA FOR WHICH DESIGNED | HYDROGEN 5TH RESPONSE |  | MEDIA FOR WHICH DESIGNED | REFRIGERANT 12 4TH RESPONSE |  | MEDIA FOR WHICH DESIGNED | ACETYLENE 2ND RESPONSE |  | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE |  | MEDIA FOR WHICH DESIGNED | AMMONIA, GASEOUS 3RD RESPONSE |  | NOMINAL THREAD SIZE | 0.250 INCHES ALL ENDS |  | OPENING PRESSURE SETTING | 1.0 POUNDS PER SQUARE INCH |  | SPECIAL FEATURES | POPOFF TYPE |  | VALVE OPERATION METHOD | AUTOMATIC |  | STYLE DESIGNATOR | STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF SEPARABLE SECTIONS. |  | THREAD DIRECTION | RIGHT-HAND ALL ENDS |  | THREAD SERIES DESIGNATOR | NPT ALL ENDS | 
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