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		                        | National Stock Number:
 4820-00-824-9740
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 008249740
 
 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:
 
 | 9199041 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |  | C-13-A | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | 
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 Techincal Specification:
 
 | STYLE DESIGNATOR | STRAIGHT THRU |  | VALVE OPERATION METHOD | AUTOMATIC |  | MATERIAL | COPPER ALLOY 262 OR |  |  | COPPER ALLOY 331 OR |  |  | COPPER ALLOY 344 BODY |  |  | RUBBER SYNTHETIC SEAT |  |  | COPPER ALLOY 262 OR |  |  | COPPER ALLOY 344 STEM |  | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626,COMP AA,1/2H FED SPEC SINGLE MATERIAL RESPONSE BODY |  |  | QQ-B-626,COMP 11,1/2H FED SPEC SINGLE MATERIAL RESPONSE STEM |  | FLOW CONTROL DEVICE | POPPET |  | POWER DRIVE OPERATING PRESSURE | 7.0 POUNDS PER SQUARE INCH NOMINAL |  | CONNECTION TYPE | THREADED EXTERNAL PIPE 1ST END |  | CONNECTION STYLE | PLAIN (PIPE) 1ST END |  | NOMINAL PIPE SIZE ACCOMMODATED | 0.250 INCHES 1ST END |  | THREAD SERIES DESIGNATOR | NPT 1ST END |  | NOMINAL THREAD SIZE | 0.250 INCHES 1ST END |  | THREAD QUANTITY PER INCH | 18 1ST END |  | THREAD DIRECTION | RIGHT-HAND 1ST END |  | RENEWABLE SEAT RING TYPE | RETAINING SCREW |  | DISK LOADING METHOD | SPRING |  | OPENING PRESSURE SETTING | 7.0 POUNDS PER SQUARE INCH |  | FEATURES PROVIDED | VALVE STEM LOCK SHIELD |  | TEST DATA DOCUMENT | 18876-9199041 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 18876 |  | DESIGN CONTROL REFERENCE | 9199041 | 
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