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		                        | National Stock Number:
 4820-00-788-0417
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 007880417
 
 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:
 
 | 519-1742 | 65459 | LANDOLL COMPANY, LLC |  | B20C30 | 72914 | GRIMES AEROSPACE COMPANY |  | P309N | 64560 | WELDON TOOL CO THE |  | P309N60PSI | 64560 | WELDON TOOL CO THE | 
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 Techincal Specification:
 
 | STYLE DESIGNATOR | TEE W/OFFSET |  | VALVE OPERATION METHOD | AUTOMATIC |  | MATERIAL | ALUMINUM ALLOY BODY |  |  | PLASTIC FLOW CONTROL DEVICE |  | CENTER TO CENTER DISTANCE | 0.313 INCHES |  | OFFSET DISTANCE | 0.250 INCHES |  | FLOW CONTROL DEVICE | PISTON |  | CONNECTION TYPE | THREADED INTERNAL BOSS ALL ENDS |  | CONNECTION STYLE | GASKET SEAL(BOSS) ALL ENDS |  | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES ALL ENDS |  | THREAD SERIES DESIGNATOR | UNF ALL ENDS |  | NOMINAL THREAD SIZE | 0.437 INCHES ALL ENDS |  | THREAD CLASS | 3B ALL ENDS |  | THREAD DIRECTION | RIGHT-HAND ALL ENDS |  | RENEWABLE SEAT RING TYPE | PRESSED-IN |  | DISK LOADING METHOD | SPRING |  | FEATURES PROVIDED | PRESSURE TIGHT OUTLET SIDE AND |  |  | VALVE STEM LOCK SHIELD |  | SPECIAL FEATURES | TAPPED MINUS 2 THDS IN RELIEF PORT | 
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