The VALVE,CHECK is a the manufacturer industrial component. Key specifications include thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL BOSS FIRST END, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END, special_features: WEAPON SYSTEM ESSENTIAL, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND FIRST END. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-181-9248, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
| thread_class | 3A FIRST END A |
| connection_type | THREADED EXTERNAL BOSS FIRST END |
| connection_style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) FIRST END |
| special_features | WEAPON SYSTEM ESSENTIAL |
| style_designator | STRAIGHT THRU |
| thread_direction | RIGHT-HAND FIRST END |
| mounting_position | HORIZONTAL |
| nominal_thread_size | 0.438 INCHES FIRST END IN |
| valve_operation_method | AUTOMATIC |
| end_item_identification | HELICOPTER,IROQUOIS UH-1;HELICOPTER,COBRA/TOW,AH SERIES |
| thread_series_designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| criticality_code_justification | FEAT |
| NSN | 4820-00-181-9248 |
| STYLE DESIGNATOR | STRAIGHT THRU |
| STYLE DESIGNATOR | STRAIGHT THRU |
| END ITEM IDENTIFICATION | HELICOPTER,IROQUOIS UH-1;HELICOPTER,COBRA/TOW,AH SERIES |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES FIRST END IN |
| VALVE OPERATION METHOD | AUTOMATIC |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| NOMINAL THREAD SIZE | 0.438 INCHES FIRST END IN |
| THREAD CLASS | 3A FIRST END A |
| CONNECTION TYPE | THREADED EXTERNAL BOSS FIRST END |