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		                        | National Stock Number:
 4820-00-835-4847
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 008354847
 
 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:
 
 | R2A7558 | 27188 | MARMON-HERRINGTON COMPANY |  | R2A7558 | 38460 | LONG-AIRDOX CO | 
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 Techincal Specification:
 
 | MATERIAL | STEEL CORROSION RESISTING OVERALL |  | SURFACE TREATMENT | PASSIVATE |  | STYLE DESIGNATOR | STRAIGHT THRU |  | FLOW CONTROL DEVICE | DISK |  | MEDIA FOR WHICH DESIGNED | STEAM SINGLE RESPONSE |  | MAXIMUM OPERATING PRESSURE | 300.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |  | MAXIMUM OPERATING TEMP | 500.0 DEG FAHRENHEIT SINGLE RESPONSE |  | VALVE OPERATION METHOD | AUTOMATIC |  | CONNECTION TYPE | THREADED INTERNAL PIPE 1ST END |  |  | THREADED EXTERNAL PIPE 2ND END |  | CONNECTION STYLE | PLAIN, OPTIONAL END (PIPE) 1ST END |  |  | PLAIN (PIPE) 2ND END |  | NOMINAL PIPE SIZE ACCOMMODATED | 0.750 INCHES 1ST END |  |  | 1.500 INCHES 2ND END |  | THREAD SERIES DESIGNATOR | NPT 1ST END |  |  | NPT 2ND END |  | NOMINAL THREAD SIZE | 0.750 INCHES 1ST END |  |  | 1.500 INCHES 2ND END |  | THREAD QUANTITY PER INCH | 11-1/2 2ND END |  | THREAD DIRECTION | RIGHT-HAND 1ST END |  |  | RIGHT-HAND 2ND END |  | MOUNTING POSITION | HORIZONTAL OR |  |  | VERTICAL |  | DISK LOADING METHOD | SPRING |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 27188 |  | DESIGN CONTROL REFERENCE | R2A7558 | 
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