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		                        | National Stock Number:
 4820-00-845-3990
 
 Federal Supply Class:
 4820
 
 National Item Identification Number:
 008453990
 
 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:
 
 | 1R3049-79 | 26044 | SAF INDUSTRIES LLC |  | 32-69004-79 | 76301 | THE BOEING COMPANY | 
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 Techincal Specification:
 
 | MATERIAL | ALUMINUM ALLOY 2024 BODY |  |  | STEEL COMP 303 FLOW CONTROL DEVICE |  |  | RUBBER SYNTHETIC PACKING |  | SURFACE TREATMENT | ANODIZE |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE |  | STYLE DESIGNATOR | STRAIGHT THRU |  | FLOW CONTROL DEVICE | POPPET |  | MEDIA FOR WHICH DESIGNED | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |  | MAXIMUM OPERATING PRESSURE | 3000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |  | CONNECTION TYPE | THREADED INTERNAL TUBE 1ST END |  |  | THREADED EXTERNAL TUBE 2ND END |  | CONNECTION STYLE | FLARED (TUBE) 2ND END |  | SEAT ANGLE | 37.0 DEGREES 2ND END |  | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES 1ST END |  |  | 0.250 INCHES 2ND END |  | THREAD SERIES DESIGNATOR | UNF 1ST END |  |  | UNF 2ND END |  | NOMINAL THREAD SIZE | 0.437 INCHES 1ST END |  |  | 0.438 INCHES 2ND END |  | THREAD QUANTITY PER INCH | 20 1ST END |  |  | 20 2ND END |  | THREAD CLASS | 3B 1ST END |  |  | 3A 2ND END |  | THREAD DIRECTION | RIGHT-HAND 1ST END |  |  | RIGHT-HAND 2ND END |  | MOUNTING POSITION | HORIZONTAL |  | DISK LOADING METHOD | SPRING |  | SPECIAL FEATURES | 2.730 IN. LG OVER-ALL,0.875 IN. ACROSS FLATS |  | THE MANUFACTURERS DATA |  |  | MANUFACTURERS CODE | 26044 |  | DESIGN CONTROL REFERENCE | 1R3049-79 | 
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