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National Stock Number:
4820-00-283-1181
Federal Supply Class:
4820
National Item Identification Number:
002831181
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:
| 4R121-123 | 82829 | ALLEN AIRCRAFT PRODUCTS INC | | 6F2962-123 | 99240 | CRISSAIR INC | | 749831-123 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| CONNECTION STYLE | FLARELESS SECOND END | | CONNECTION STYLE | FLARELESS FIRST END | | CONNECTION TYPE | THREADED EXTERNAL TUBE FIRST END | | CONNECTION TYPE | THREADED EXTERNAL TUBE SECOND END | | FLOW CONTROL DEVICE | POPPET | | MEDIA FOR WHICH DESIGNED | HYDRAULIC FLUID, PHOSPHATE-ESTER BASE SINGLE RESPONSE | | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES SECOND END | | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.375 INCHES FIRST END | | NOMINAL THREAD SIZE | 0.438 INCHES SECOND END | | NOMINAL THREAD SIZE | 0.562 INCHES FIRST END | | OPERATING PRESSURE | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE | | SEAT ANGLE | 12.0 DEGREES FIRST END | | SEAT ANGLE | 12.0 DEGREES SECOND END | | VALVE OPERATION METHOD | AUTOMATIC | | STYLE DESIGNATOR | STRAIGHT THRU | | SURFACE TREATMENT | PASSIVATE | | THREAD CLASS | 3A FIRST END | | THREAD CLASS | 3A SECOND END | | THREAD DIRECTION | RIGHT-HAND FIRST END | | THREAD DIRECTION | RIGHT-HAND SECOND END | | THREAD QUANTITY PER INCH | 18 FIRST END | | THREAD QUANTITY PER INCH | 20 SECOND END | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
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