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		                        | National Stock Number:
 4820-01-267-0271
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 012670271
 
 Description:
 VALVE,CHECK
 
 Detail:
 A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
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 Manufacturer Information:
 
 | 000-8002-391 | 94756 | THE BOEING COMPANY |  | 4001582 | 15882 | SONOBOND ULTRASONICS, INC. |  | A31484-200 | 32402 | JB INDUSTRIES INC |  | 4001582 | 83944 | AEROPROJECTS INC |  | A31484 | 83994 | ALLIED REFRIGERATION INC |  | 9453205 | 98750 | SAN ANTONIO AIR LOGISTICS CENTER | 
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 Techincal Specification:
 
 | MATERIAL | COPPER ALLOY OVERALL |  | STYLE DESIGNATOR | STRAIGHT THRU |  | MAXIMUM OPERATING PRESSURE | 400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |  | MAXIMUM OPERATING TEMP | 300.0 DEG FAHRENHEIT SINGLE RESPONSE |  | VALVE OPERATION METHOD | AUTOMATIC |  | CONNECTION TYPE | THREADED EXTERNAL PIPE 1ST END |  |  | THREADED EXTERNAL TUBE 2ND END |  | CONNECTION STYLE | PLAIN (PIPE) 1ST END |  |  | FLARED (TUBE) 2ND END |  | SEAT ANGLE | 37.0 DEGREES 2ND END |  | THREAD SERIES DESIGNATOR | NPTF 1ST END |  |  | UNF 2ND END |  | NOMINAL THREAD SIZE | 0.250 INCHES 1ST END |  |  | 0.438 INCHES 2ND END |  | THREAD CLASS | 2A 2ND END |  | THREAD DIRECTION | RIGHT-HAND 1ST END |  |  | RIGHT-HAND 2ND END |  | MOUNTING POSITION | HORIZONTAL |  | MINIMUM OPERATING TEMP | -65.0 DEG FAHRENHEIT | 
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