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National Stock Number: 4820-01-012-6847
Federal Supply Class: 4820
National Item Identification Number: 010126847
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:
| 5590-139 | 18355 | THE BOEING COMPANY | | 5590-139 | 76301 | THE BOEING COMPANY | | 68B690101-139 | 76301 | THE BOEING COMPANY | | 7M845-3 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| APERTURE DIAMETER | 0.139 INCHES NOMINAL | | CONNECTION STYLE | GASKET SEAL (TUBE) ALL ENDS | | CONNECTION TYPE | THREADED EXTERNAL TUBE ALL ENDS | | CRITICALITY CODE JUSTIFICATION | FEAT | | DISK LOADING METHOD | SPRING | | FLOW CONTROL DEVICE | POPPET | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MOUNTING POSITION | HORIZONTAL OR VERTICAL | | NOMINAL THREAD SIZE | 0.718 INCHES ALL ENDS | | SPECIAL FEATURES | WEAPON SYSTEM ESSENTIAL | | VALVE OPERATION METHOD | AUTOMATIC | | STYLE DESIGNATOR | STRAIGHT THRU | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE | | SURFACE TREATMENT | PASSIVATE | | THREAD CLASS | 3A ALL ENDS | | THREAD DIRECTION | RIGHT-HAND ALL ENDS | | THREAD QUANTITY PER INCH | 20 ALL ENDS | | THREAD SERIES DESIGNATOR | UNS ALL ENDS |
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