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		                        | National Stock Number:
 4820-00-494-9355
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 004949355
 
 Description:
 VALVE,RESTRICTOR CHECK
 
 Detail:
 A VALVE HAVING AN ORIFICE IN THE POPPET, DISK, OR THE LIKE, TO PERMIT RESTRICTED FLUID FLOW WHEN THE VALVE IS SEATED. IT DOES NOT HAVE A STEM OR PROVISIONS FOR PRESSURE ADJUSTMENTS, AND IS SIMILAR TO A VALVE, CHECK WITH THE EXCEPTION OF THE ORIFICE WHICH PERMITS FLUID FLOW IN MORE THAN ONE DIRECTION.
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 Manufacturer Information:
 
 | C40552N1 | 77842 | EATON CORPORATION | 
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 Techincal Specification:
 
 | MATERIAL | STEEL COMP 303 BODY |  |  | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |  |  | RUBBER PACKING |  | MATERIAL DOCUMENT AND CLASSIFICATION | 66,AISI 303/SAE 30303 FED STD SINGLE MATERIAL RESPONSE BODY |  | STYLE DESIGNATOR | STRAIGHT THRU |  | APERTURE DIAMETER | 0.250 INCHES NOMINAL |  | FLOW CONTROL DEVICE | DISK |  | MEDIA FOR WHICH DESIGNED | AIR SINGLE RESPONSE |  | MAXIMUM OPERATING PRESSURE | 4500.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |  | VALVE OPERATION METHOD | AUTOMATIC |  | CONNECTION TYPE | THREADED INTERNAL PIPE ALL ENDS |  | CONNECTION STYLE | PLAIN, OPTIONAL END (PIPE) ALL ENDS |  | THREAD SERIES DESIGNATOR | NPT ALL ENDS |  | NOMINAL THREAD SIZE | 1.000 INCHES ALL ENDS |  | THREAD DIRECTION | RIGHT-HAND ALL ENDS |  | MOUNTING POSITION | HORIZONTAL OR |  |  | VERTICAL |  | DISK LOADING METHOD | SPRING | 
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