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National Stock Number:
4820-00-283-6956
Federal Supply Class:
4820
National Item Identification Number:
002836956
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:
| 4R122-127 | 82829 | ALLEN AIRCRAFT PRODUCTS INC | | 6F2966-127 | 99240 | CRISSAIR INC | | 749959-127 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| CONNECTION STYLE | FLARELESS ALL ENDS | | CONNECTION TYPE | THREADED EXTERNAL TUBE ALL ENDS | | DISK LOADING METHOD | SPRING | | FLOW CONTROL DEVICE | POPPET | | OPERATING PRESSURE | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE | | MATERIAL | STEEL COMP 630 OVERALL | | MAXIMUM OPERATING TEMP | -65.0 FAHRENHEIT FIRST RESPONSE | | MAXIMUM OPERATING TEMP | 250.0 FAHRENHEIT SECOND RESPONSE | | MEDIA FOR WHICH DESIGNED | FUEL/OIL, HYDROCARBON THIRD RESPONSE | | MEDIA FOR WHICH DESIGNED | FUEL/OIL, HYDROCARBON SECOND RESPONSE | | MEDIA FOR WHICH DESIGNED | HYDRAULIC FLUID, PHOSPHATE-ESTER BASE FIRST RESPONSE | | MOUNTING POSITION | HORIZONTAL OR VERTICAL | | NOMINAL THREAD SIZE | 0.438 INCHES SECOND END | | NOMINAL THREAD SIZE | 0.562 INCHES FIRST END | | SEAT ANGLE | 12.0 DEGREES ALL ENDS | | VALVE OPERATION METHOD | AUTOMATIC | | STYLE DESIGNATOR | STRAIGHT THRU | | SURFACE TREATMENT | PASSIVATE | | THREAD CLASS | 3A ALL ENDS | | THREAD DIRECTION | RIGHT-HAND ALL ENDS | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
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